Rice yield prediction

Drought is one of the most important abiotic stresses that cause drastic reduction in rice grain yield (GY) in rainfed environments. The identification and introgression of QTL leading to high GY under drought have been advocated to be the preferred breeding strategy to improve drought tolerance of popular rice varieties.

15p vinarcissa 21-03-2023 2 1   Download

Climate change and ozone depletion have caused increased ultraviolet B (UVB; 280-315nm) radiation levels on earth, which has been predicted to cause decreased growth and yield of various crops, including rice, the most important staple food worldwide. UVB radiation sensitivity varies extensively in Asian rice (Oryza sativa L.) and African rice (Oryza glaberrima Steud. and Oryza barthii A. Chev.) cultivars, and the activity of cyclobutane pyrimidine dimer (CPD) photolyase that repairs UVB-induced CPD is an essential factor underlying UVB sensitivity in rice.

12p lyhuyenthu 31-01-2023 6 2   Download

The study was conducted on Rice and Poultry entrepreneurs in Memari-1 block, Purba Barddhaman district of West Bengal, India. This has been conducted to assess their sociopersonal, agro-economical and techno-managerial skills. Several entrepreneurial aspects are considered in this study to portrait a well discernible picture of their entrepreneurship.

10p chauchaungayxua10 18-03-2021 13 1   Download

In the present study, a set of 30 hybrids derived from crosses between 10 tropical japonica lines and 3 indica were analyzed for heterosis, per-day productivity, yield efficiency and an association index were established between yield and molecular marker amplification pattern.

9p gaocaolon9 22-12-2020 15 2   Download

Predictive models for the rice crop (Oryza sativa L.) of Chhattisgarh plain and its constituent districts have been made. Models have been fitted for the area, productivity and production of the crop separately for above region. Based on these models prediction of area productivity and production of rice have been made year wise between 1998-99 to 2013-14.

6p gaocaolon9 22-12-2020 11 2   Download

The aim of the present study was to predict pant stages and yield of rice crop using agrometeorological indices in tropical region of Khurdha district of Odisa.

7p trinhthamhodang1215 23-09-2020 19 2   Download

The weather variables affect the crop differently during various stages of development (Tripathi et al., 2012). Thus, extent of weather influence on crop yield depends not only on the magnitude but also on the distribution pattern of weather variables over the crop season.

7p nguaconbaynhay7 15-08-2020 6 1   Download

A field experiment was conducted to evaluate 30 basmati rice genotypes for their stability for yield and yield attributing traits over three growing seasons. Fifteen randomly selected plants were sampled in the middle row of each plot and were used for the analysis. The study indicated that environment + (genotype x environment) was significant for all the characters studied thereby validating the distinctness of the environments considered. The GXE (linear) was highly significant for all the traits considered.

12p gaocaolon5 14-06-2020 13 1   Download

India is a predominantly agriculture based economy country. Annual population growth rate of the country is nearly 1.8 % and if per capita consumption of rice is expected to be 400 gm of rice per day then the demand for rice in 2025 will be 130 m. tones. For obtaining the high yield with seed planting equipment or planter, it is very essential to drop the paddy seeds in rows maintaining accurate seed rate and seed spacing with minimum damage to seeds during metering.

22p angicungduoc5 14-06-2020 22 1   Download

Under the scenario of an escalating population and an epoch of climate variability, increasing the production of rice to confront the food security and overcome the human demands from the ever shrinking land resources have emerged as an obligatory step in augmenting the nations’ economy.

11p nguathienthan5 04-06-2020 19 1   Download

The phenological development and thermal unit requirements of seven aromatic rice landraces of West Bengal were studied in randomized block design (RBD) with 3 replications at ‘C’ Block Farm (22o 99’ N, 88o 45’ E, 9.75 m.s.l.), Bidhan Chandra Krishi Viswavidyalaya, Kalyani, West Bengal, India during kharif (wet) season of 2008 and 2009. All seven indigenous scented rice cultivars were long-duration types (140.0 – 148.3 days) and differed slightly among themselves towards attainment of different phenophases and accumulation of heat units.

6p quenchua4 06-04-2020 6 1   Download

Rice is sensitive to high temperature, especially at the reproductive stage, which causes spikelet sterility and yield losses. The increase in both frequency and intensity of high temperature, along with its large variability, is emerging as a potential threat to the sustainability of rice production. The predicted 2–4°C increment in temperature by the end of the 21st Century poses a threat to rice production.

7p caygaocaolon4 04-04-2020 14 2   Download

The new challenge of irrigated lowland rice is to sustain the needed increase in rice yields while reducing the requirements for water and N per unit of grain production. Validation of markers helps in determining the reliability and practical applicability of the markers in predicting the phenotype.

4p trinhthamhodang4 22-03-2020 13 1   Download

An experiment was conducted to study crop growth modeling at the paddy field of ICAR- Indian Institute of Water Management during Kharif 2016. The CERES-Rice model of DSSAT 4.5 was used to simulate crop growth and yield; Validation results showed that model predicted number of days to flowering with the RMSE values of 0.98. Four days difference was recorded between observed and simulated days to flowering in different varieties.

8p nguaconbaynhay4 22-03-2020 14 1   Download

The climate determines selection of right crop and its sequence for a particular location, while the prevailing weather conditions dictate the potentiality of that crop and nitrogen use. On an average every 1oC rise in temperature could lead to a 20 per cent reduction in crop yields. Therefore, the two big challenges viz., finite cultivable land and rise in temperature have to be overcome by agricultural sector to sustain crop yields. In this direction, one of the ways is to use weather and climate as non-monetary input in crop production. Among the crops, rice is a weather sensitive crop.

6p chauchaungayxua3 07-02-2020 13 0   Download

Salinity is one of the major abiotic stresses, and it limits rice production in many worldwide areas. A lot of attention has been paid to developing rice salinity tolerance to cope with climate change. This study is based on the genome sequence databases of 36 Vietnamese landraces. The candidate gene, SRWD2, has been predicted and identified. The salt responsive WD40 protein 2 is involved in salt tolerance yield of nine rice landraces.

4p caygaocaolon1 13-11-2019 12 1   Download

Using cDNA subtraction technique, 18 cold stress responsive-genes were identified, among them a novel gene, ZmCOI6.1, whose function is still unknown. Analysis of the ZmCOI6.1 promoter sequence revealed several conserved stress-responsive cis-acting elements. Further expression characterization shows that ZmCOI6.1 is induced, in addition by cold, by other abiotic stresses such as drought and NaCl as well as by signalling molecules such as ABA and SA. The results indicate that ZmCOI6.1 is a general stress responsive gene. A possible regulation mechanism is presented where ZmCOI6.

10p trinhthamhodang 24-10-2019 9 0   Download