14 research outputs found
Not Available
Not AvailableIt is not a research paper or review paper. It is only a 2 page popular article published in a journalNot Availabl
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Not AvailableA field study was conducted with maize during monsoon season to quantify the response
of maize to short-term sequential stresses related to floods and drought. A simulation
analysis was also carried out using the InfoCrop maize model. The treatments of irrigated,
rainfed, drought and four different combinations of sequential stresses (rainfed, irrigation
and drought) at different phases of crop growth were imposed. Silking delayed by about
one week under adequate irrigation regime, as compared to that of rainfed crop, however
moderate drought advanced silking by 10 days. Grain yield was highest at the irrigated
condition. Imposition of sequential stresses RF-D-EW, D-RF-EW, EW-RF-D, D-EW-RF
and MD resulted in 46.7%, 51.7%, 35%, 40% and 63.3% decreased in grain yield
respectively over irrigated condition. The total biomass was decreased with RF-D-EW, DRF-EW,
EW-RF-D, D-EW-RF and MD by 34.7%, 38.3%, 14.9%, 29.1% and 36.9%
respectively. Maize model simulated days to 50% silking well in all situations of multiple
stresses except in case where rainfed crop was exposed to excess water/flooding during
flowering and then to terminal drought. The total dry matter and yield were also simulated
satisfactorily in most of the cases. The InfoCrop maize model worked satisfactorily for
rainfed and irrigated conditions and could be calibrated for the experiemental conditions.
However, refinement is needed from experimentation and model point of view for
simulating the multiple and sequential stress situationsNot Availabl
Biennial Report (2014–16) of AICRP on Management of Salt Affected Soils and Use of Saline Water in Agriculture
Indian Council of Agricultural Researc
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Not AvailableSalinity hinders the crop growth right from germination to maturity of crop plants by altering the
water relations, nutrient balance, specific ion toxicity etc. Agronomic practices, though cannot
reclaimed or remove the salts from the soil, but have potential role in managing the salt and
water balance in the crop root zone and apart escaping and tolerance mechanism to the crop
plants grown. Adoption of package of best agro-techniques like selection of appropriate crop and
its varieties, priming of seed prior to sowing, sowing with appropriate methods, irrigation with
minimized salt load in soil, balanced fertilization etc. can sustain the yield of salty soils.Directorate of Extension, Ministry of Agriculture and Farmers’ Welfare, Government of Indi
Kshariya mridaon main fal-utpadan main Zinc or Iron ka prabandham.
Not AvailableHindi Article in Training BulletinNot Availabl
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Not AvailableAnthropogenic activities have released huge amounts of greenhouse gases namely carbon dioxide, methane and nitrous oxide into the atmosphere. Buildup of greenhouse gases into the atmosphere causing climate change and it result in several dangerous effects to ecosystems functioning, human health and welfare. Over the past century we witnessed faster changing climate and it is going to be faster, if proper measures for its mitigation is not adopted. For effective mitigation of anthropogenic emission of these Greenhouse gases, it is really important to know the current total GHG emission and that is to at precisely. For measurements of GHGs emission two techniques are common namely closed chamber techniques and eddy covariance techniques. Till today, the closed chamber technique is the most popularly used. In this, emissions of gases from soil are usually determined by closed chamber placed over the soil surface, which restricts the volume of air exchange across the covered surface. Eddy covariance flux tower is the micrometeorological method which continuously measures the vertical concentration gradients of the gases. The present article is focused on the measurement of GHGs using eddy covariance flux tower and its importance over the closed chamber techniques.Not Availabl
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Not AvailableThe abiotic stresses, such as soil salinity and sodicity are largely responsible for the low productivity of horticultural crops mainly due to low availability of micro-nutrients especially as zinc (Zn) and iron (Fe). Therefore, judicious management of plant nutrients in these soils is as important as their reclamation.Not Availabl