One of the most important stages of corn growth is the knee high stage. The pH must be examined, salinity, and disease incidence

Waiting for your suggestions :) :) 

Any idea about which nutrient deficiency..? Are you sure it is nutrient deficiency only..?

It's showing complex of NPK but not clearly @ Anoop Kumar Srivastava Sir

Why am I putting up this quarry because crop is hardly one month old and root system  will not be so developed to compensate on the deficit nutrients to be acquired  by the developing plants despite those suspected nutrients are applied in soil in plenty. This is the reason, we need to supplent basal doses of fertilizers depending upon the results of soil test.

Normally we have to supplement the crop at V6 or V8 stage with N to avoid def. But before this plants should not be the victim of it. For that, you may refer to the field history either the same was observed earlier or if any soil born disease or soil fertility status along with its structure. The other possibility may be the areal or underground stresses. It depends on the researcher personal observation and scouting, to identify the situation.

Hi Vijay

I faced this problem for several time. Crops after maize normally show nutrient deficiency and lower growth rate. However, it will be fixed after couple of days. Maize produce high biomass in short period of time and this decrease nutrient availability in soil for while. in other hand, maize need too much irrigation which promote mobile nutrient leaching.

However, researchers should find the case. I just replaced the maize with other crops in rotation.

I forgot to say

In the case we used manure, we had a less deficiency symptom in subsequent crop.

In your case, it is better to spray fertilizer on foliage.

I think, these symptoms are not for real nutrient deficiency. we should consider the efficiency of nutrient uptake.

Thank Drs @ Srivastava & Noor your suggestions and recommendation will be useful for me.   

Sir, I would say that in this condition soil and environmental condition playing an important role over this. Soil NPK and quality should be tested before sowing this crop. Once i faced the similar observation when i sown this crop in greenhouse condition. To sort out this trouble i made some changes in nutrient provided externally. Maize plant grow rapidly and it uptake more nutrient from soil in starting weeks, P content is very important in soil in this time. Some manipulation could be done while providing P nutrient.  

Thanks

If you take 20 leaflets dry them and send them for atomic spectra analysis the problem can be confirmed and diagnosed. Do you have a photo and soil analysis that would also be critical for the proper diagnosis? If you have a photo it would be very helpful. 

I was looking at G B Pantanagar University experimental information found a soil of mollisol with a pH of 7.8 with low P availability. This alkalinity may well induce zinc deficiency in maize the tissue level of less than 25 ppm would confirm that potential issue. The use of Zinc sulfate applied with urea as a foliar would address zinc chlorosis. Zinc chlorosis is induced often when sizable P is applied which can be antagonistic to zinc absorption. Zinc deficiency is common in maize under alkaline soil conditions particularly with high carbonate levels. 

As per mentioned may of the researcher in their publication as well as reply from yours it will be the probable reason like maize plant grow rapidly and it uptake more nutrient from soil in starting weeks. The plant root growth not properly established (after one month) or crop not able to uptake the nutrient in soil solution. While it may be due to not maintain the soil solution equilibrium, while the crop filed have adequate amount of nutrients before showing of crop.

Thanks for your valuable reply

Probably , basal  corrective doses of fertilizers could be revisited in the light of on-going discussion discussion , including the nutrients like Fe, Mn, Zn supplement as highlighted by Dr Hepperly...Or alternatively  wait for another 15-20 days ,these affected  could recover also..

As per my opinion, there is an interaction (antagonistic effects) among the macro and micro nutrients, recently some researcher also reported that heavy metals like Zn, Cd etc replace the nutrients in the rhizosphere soil,thereby affecting the proper nutrient uptake by plant roots. which results in nutrient deficiency in plant shoot etc.

Soil nutrients analysis will surely clear the picture.

Soil Fertility Status of Maize experiment before planting crop (mean of 3 composite soil samples)

pH

6.90

OC

1.6%

N

480 kg/ha

P

24 kg/ha

K

270 kg/ha

Fe

7.6 mg/kg

Cu

0.6 mg/kg

Zn

1.4 mg/kg

Mn

3.8 mg/kg

Soil aeration may create such problem in these rainy days

Vijay, P and Mn seem to be suboptimum ..

Maize as a crop is very sensitive to zinc deficiency. Your soil level looks low to me. If you foliar apply 5 kg/ha urea and 1 kg zinc as zinc sulfate and the chlorosis or yellow disappears in a few days you are dealing with zinc deficiency. The tissue level in foliage for not having zinc deficiency is over 25 ppm and there would be no problem up to 100 ppm. Subclinical deficiency would occur from 10 to 25 ppm zinc and very obvious drastic symptoms beyond 10 ppm. Foliar analysis is a better indication of micronutrient issues than soil analysis in my experience. 

Thanks, Dr. Hepperly, for your suggestions  

Check the drainage of the field. If drainage is not provided properly also nutrient absorption from root may get hamper. So, deficiency may appear

you need to chek the relation betwen Ca/Mg/k

More important question is , which is that parameter able to express so quickly on the crop performance so early in crop growth...

Dear Dr. Angel MARCELO Calvache Ulloa, 

As per your suggestions, we will try for Ca/Mg/K can you suggest in which system we will check (Soil or Plant or both).

Thank you so much for your inputs

Dear Dr. Srivastava, I am also waiting for suggestions, 

There must some  over-riding factor or a combination of factors which is/are so instant in crop response  and so expressive within one month time in field...I have my own doubt , if soil deficient of nutrients like Fe, Zn , even n , it will not be so expressive and  expressive so early in crop growth..?? 

Yes I agree with reply from Paramesh, if drainage is not provided properly nutrient absorption is affected.

Soil pH in alkaline as well as in acidic range reduce Zn availability to plant inspite fertilizer application. Addition of organic manure also adsorb Zn and reduce availability to plant. Liming of acidic soils may also adsorb Zn on CaCO3 and reduce availability. Water logging also create anoxia reduce absorption as well as increase pH, which may also leads to precipitation, which aggrivate the Zn deficiency. 0.5%ZnSO4 spray with 2.0% urea spray will solve the problem.

Friends , which abiotic factor (except drainage) will produce such instant effect on crop within one month time ...its really astonishing...And soil i feel, has quite favorable pH...

Very good point about the role of drainage in many of the crop issues. Unfortunately this is not tested for and monitored. My son has acquired a farm in a humid area in low lying river plain with a clay soil. This is a recipe of drainage issues. There are several areas where the issues and problems can be remediated. First avoid tillage when your soil is wet. Secondly when you do prepare of cropping use raised banks. Consult a soil conservation person on the set up of surface drainage and needs to contour and level. In terms of percolation of soil the mantenace of optimum organic matter is very important. The use of cover crops can be used to improve the percolation rates by their effect in breaking down compacted soil levels for this purpose sudangrass and oil seed radish are particularly useful. One of ways of avoiding the issues with a high clay soil and compaction by equipment and preparation is going to perennial tree crops which are adapted to the soil conditions. 

Dear Drs. Suresh, Srivastava, Paul, thanks for your suggestions

Dear Vijay thanks for raising this issue. many possible options are there as others can suggest you. You can do one more thing for the crop that give good irrigation and do drainage after couple of hours. It is a common practice where nutrient fixation are or due to some other factors unavailability exceeds. please do tell us about soil type and condition. Please keep in mind only deliverance of nutrient is not the last phase but first and availability of nutrient is the kind of last... please check for available status etc..thanks

Dear Dr. Nikhil Sir, thanks for your valuable suggestion :) :) 

You can do proper analysis of soils some times our soil affected by salts. Please analysed salinity or sodicity and specify the which nutrients deficient. 

Dr Yaduvanshi , soil pH is 6.93 with no  issue of salts..

Soil is normal and other possibility, like very high amount of organic sources used so may immobilization of nutrients and heavy rainfall also washout the nutrients in hill reasons. 

Thanks Dr. Yaduvanshi and Dr. Srivastava Sir, for your valuable discussion on this problem.

plant tissue isolation method and soils analysis

Dear Dr. Haryuni, please send me details,  

thanking you for your input  

This may be stem from high pH levels of the soil.

The vertisols or black cotton soils of the Indian subcontinent have issues with both high pH and high impermeable clay content. The management of these is to avoid working them with wet. Much surface impermeable calciche layers are mixed, use the raised beds for planting systems and adjust the pH by sulfuring to get a more neutral pH. As Mehmet Salih Sayar comments issues can be both from poor structure but also from high pH which will immobilize iron, zinc and manganese causing yellowing and stunted poor growth. In relation to these issues of impermeability besides identifying pH constraint and hard layers in the profile there is a need to evaluate the state and content organic matter which can help alleviate both the structural and nutrient availability issues. 

You thought about the possibility that it is a disease? CSS in low levels seem like deficiency symptoms

Thanks, Dr. EG Virla for your valuable suggestion.

In general, maize grow quickly and it requires more nutrients from the soil in initial weeks, but it is too early to predict that it shows deficiency symptoms due to nutrient deficiency if the adequate availability of nutrients are there in the soil. It means soil is normal and I think that due to very high amount of organic sources used in the Terai region, it may immobilize nutrients and heavy rainfall also washout the nutrients from the rhizosphere. 

One of the most important stages of corn growth is the knee high stage. The pH must be examined, salinity, and disease incidence