Alem Redda

14 Questions 82 Answers 0 Followers

Questions related from Alem Redda

Scales or degree of grain filling for wheat ? Scientific?

Due to many biotic and abiotic factors, crop seeds may not get fully filled at harvest. For example, lack of proper nutrition, lack of rain, late planting, physical damage, etc. Based on their...

09 January 2022 7,699 15 View

Is basal application of N correct? For how long does N stay in the soil and how long (after seed sowing) does it take roots to start absorbing N?

URGENT PRACTICAL QUESTION Timing of nitrogen fertilizer application is key in nutrient management in agriculture. Nitrogen is considered the most mobile plant nutrient in the soil, hence timely...

17 December 2021 994 21 View

My nitrogen fertilizer dilemma! Is N application before or at planting scientifically correct? How could the plants use it without having roots?

Nitrogen is the most limiting and the least efficiently used (NUE is 0.3-0.5 in developed countries) plant nutrient. But what most gets me in doubt is the time of nitrogen fertilizer...

13 December 2021 9,157 22 View

When and how much to fertilize my maize plant? What is African Farming Centre telling us? Where on mother Earth is this possible?

In my case, we use 150 kg ha-1 for OPV and 200 kg ha-1 for hybrid varieties are recommended to be applied with three splits: 1st at planting, 2nd at knee height, and 3rd at flowering (silking and...

12 December 2021 948 4 View

What are the d/ces b/n BARRIERS and DETERMINANTS of farmers in adopting adaptation strategies to curb the negative impacts of CCV?

Today, climate change is the biggest challenge facing the planet. I think, it is a delicate topic, extremely complex, and also multidisciplinary. When dealing with the impacts of CCV (climate...

28 November 2021 5,474 5 View

What is the conceptual difference between the contingency coefficient and correlation coefficient?

I'm doing my research on modelling of barriers (limitations) and determinants (social constraints) of maize farmers' adoption of adaptation options to curb the negative impacts of CVC (climate...

11 October 2021 6,135 13 View

Is it possible to start with the phrase " Modelling of ..." for someone who is not a model developer (but is using the model made by somebody else)?

I am a beginner to DSSAT model and feeling deeply happy with DSSAT model. Most DSSAT model users begin to entitle their journal articles, book's chapter titles, proceedings etc. using the phrase...

08 September 2020 4,011 7 View

Traditional farming systems: problems or solutions? Are they problems to modern agriculture or solutions to climate change threats to agriculture?

Dear all RG professionals: 1) In agronomy, we have learned that to keep the balance between food supplies with the pace of the ever-increasing world population, we have to use modern-day...

01 January 1970 2,181 29 View

DSSAT, APSIM, AQUACROP, EPIC, STICS, etc. Which crop model to choose and use? Why and how? What is the main point of interest when choosing one?

Nowadays a lot of crop models are available. But generally speaking, farmers of poor countries are not getting benefited from these tools. Which crop model is relatively better particularly for...

01 January 1970 9,770 6 View

What are the major Xcs of maize for its fast popularity? Which crop (maize, rice, wheat) would be the world’s top crop in 2050? 2100? Why?

Five cereal crops provide 60% of the daily food intake worldwide!!! Three cereals (rice, maize, and wheat) cover more than 50% of food intake. Maize is regarded as a "Hunger-breaking crop",...

01 January 1970 1,084 7 View

Scopus indexed journal, free of charge publication and theme focusing on climate change, agriculture and farmers. Your urgent support please?

I am an agricultural researcher from SSA (Africa South of Sahara) and I can't afford the high publishing fees for journals. I have done research on "PERCEPTIONS OF CLIMATE CHANGE AND DETERMINANTS...

01 January 1970 7,591 8 View

Calibration, validation, parameterization, and simulation of maize growth & yield using DSSAT-CERES-maize model (v.4.7). Your experience, please?

Dear RG scholars, GREETINGS!!! I'm relatively new to CROP MODELING and Simulation As you all know, modeling is so interesting but as wide as an ocean. Modeling includes many challenging topics...

01 January 1970 5,985 4 View

For TREND & VAR. analysis of rainfall & Temp. using Mann Kendall trend test and Sens' slope estimator, can I do this with only 5 stations data?

Dear respected RG professionals, I'm doing my climate data with MKT (Mann Kendall Test) and SST (Sens' Slope Test) methods to test TREND and VARIABILITY of the basic climate variables (rainfall...

01 January 1970 2,411 17 View

Why farmers intercrop maize with sorghum? What could be the reasons behind intercropping of these two cereal crops?

When the issue of intercropping is raised, most researchers, including myself, are addicted to the idea of intercropping cereals with pulse crops and the first reason that comes to our mind is the...

01 January 1970 1,192 14 View