Regional Research and Technology Transfer Station RRTTS

Keonjhar, India

Regional Research and Technology Transfer Station RRTTS

Keonjhar, India
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Ray M.,Regional Research and Technology Transfer Station RRTTS | Sahoo K.C.,Regional Research and Technology Transfer Station RRTTS | Patro H.,Regional Research and Technology Transfer Station RRTTS | Biswasi S.,Regional Research and Technology Transfer Sub Station RRTTSS
Plant Archives | Year: 2016

Rice (Oryza sativa L.) is one of the most ancient crops being cultivated in 117 countries. It is the main item of the diet of 3.5 billion people, but the productivity of rice in India is low due to a number of factors like soil moisture stress, delayed sowing, heavy weed infestation, poor native soil fertility status and poor spread of improved upland cultivars have been identified as important constraints in realization of enhanced productivity levels under rainfed upland situations. The major cause of unsuitability of upland rice is due to mismatch between the environment rhythm especially rainfall pattern and crop growth rhythm. Manipulation of sowing time may help the crop to avoid the coincidence of stress at critical period. Considerable genetic variations exist in upland rice varieties with respect to their morphological traits which enable them to escape, tolerate or resist and recover from moisture stress. Poor crop stand due to improper seed placement, insufficient soil moisture for germination and severe weed competition is the major bottleneck in upland rice production. Moisture stress at initial stage adversely affects the emergence of seedlings. Seed hardening or priming is a low cost technique to avert the soil moisture stress at initial stage. Split application of nitrogen helps the crop to sustain yield in weather abberations and tide over moisture stress.

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