Impact of sowing date on yield, dry matter and nitrogen accumulation, and nitrogen translocation in dry-seeded rice in North-West India

2017 ◽  
Vol 206 ◽  
pp. 138-148 ◽  
Author(s):  
Rajinder Pal ◽  
G. Mahajan ◽  
V. Sardana ◽  
B.S. Chauhan
Keyword(s):  
Dry Matter ◽  
Sowing Date ◽  
Nitrogen Accumulation ◽  
North West ◽  
Nitrogen Translocation

scholarly journals Upland rice yield as affected by Brachiaria coverage management

2015 ◽  
Vol 19 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Adriano S. Nascente ◽  
Luís F. Stone ◽  
Cleber M. Guimarães
Keyword(s):  
Grain Yield ◽  
Cover Crop ◽  
Dry Matter ◽  
Rice Yield ◽  
Upland Rice ◽  
Proper Time ◽  
Sowing Date ◽  
Rice Grain ◽  
Brachiaria Ruziziensis ◽  
Tillage System

An important point in no-tillage system is the time between cover crop glyphosate desiccation and rice sowing. This study aimed to verify the effect of Brachiaria ruziziensis management time before rice sowing on rice yield and its components. The experiment was conducted under greenhouse conditions and consisted of four types of B. ruziziensis management: with Brachiaria and with herbicide (WBWH), without Brachiaria shoots and with herbicide (NBWH), without Brachiaria shoots and without herbicide (NBNH), and with Brachiaria and without herbicide (WBNH), at four times: 30, 20, 10, and 0 days, preceding the rice sowing. The amount of B. ruziziensis dry matter increased as the management was done closer to the rice sowing date. The WBWH and WBNH managements (this one causes the lowest rice grain yield) must be done 30 days before rice sowing; while NBWH management must be done ten or more days before rice sowing. On the other hand, NBNH management (this one favors the best rice grain yield) can be done until rice sowing day. Despite some reduction in rice yield caused by the B. ruziziensis management, when it was done at the proper time the rice grain yield was similar to the control (without Brachiaria sowing and without herbicide application).

scholarly journals Changes in dry matter, protein percentage and organic matter of soybean-oat and groundnut-oat intercropping in different growth stages in Jilin province, China

2018 ◽  
Vol 111 (1) ◽  
pp. 33
Author(s):  
Yang YONG ◽  
Yue-gao HU ◽  
Mohamad Hesam SHAHRAJABIAN ◽  
Chang-zhong REN ◽  
Lai-chun GUO ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Cropping Systems ◽  
Jilin Province ◽  
Individual Species ◽  
Growth Stages ◽  
Nitrogen Accumulation ◽  
Ripening Stage ◽  
Protein Percentage ◽  
Sole Cropping

<p>One of the most important and sustainable cropping practice is intercropping. The study was conducted under field conditions in the arid Horqine sandy land in Baicheng District, Jilin Province, Northern China in 2011. A randomized complete block design with four replications was used. Treatments comprised different mono cropping and intercropping patterns, TO: sole cropping of oat, TOS-O: oat in the intercropping of oat and soybean, TOG-O: oat in the intercropping of oat and groundnut, TS: sole cropping of soybean, TOS-S: soybean in intercropping of oat and soybean, TG: sole cropping of groundnut, TOG-G: groundnut in the intercropping of oat and groundnut. In mono-cropping systems, oat mono-cropping obtained the highest dry matter and nitrogen accumulation in all growth stages. The maximum protein percentage in all stages except for ripening stage, were for groundnut mono-cropping. Although, the maximum organic matter in ripening stage was achieved in mono-cropping of soybean, the highest one in other stages was related to groundnut mono-cropping. In intercropping patterns, oat in oat-groundnut obtained the highest dry matter in all stages. The highest value of protein percentage and organic matter in heading stage, grain filling stage, and grain dough stage was achieved in groundnut in oat-groundnut intercropping. Furthermore, the maximum value of protein percentage and organic matter in booting stage and ripening stage was related to soybean in oat-soybean intercropping. The results of this study clearly indicate that intercropping oat and groundnut affects the growth rate of the individual species in mixtures as well as the dry matter yield and nitrogen accumulation. This information can help in the adaptation of oat- intercrops for increased forage production in new cropping systems.</p>

Planting Date Effects on Winter Triticale Dry Matter and Nitrogen Accumulation

2005 ◽  
Vol 97 (5) ◽  
pp. 1333-1341 ◽  
Author(s):  
Aaron J. Schwarte ◽  
Lance R. Gibson ◽  
Douglas L. Karlen ◽  
Matt Liebman ◽  
Jean-Luc Jannink
Keyword(s):  
Dry Matter ◽  
Planting Date ◽  
Nitrogen Accumulation ◽  
Winter Triticale

Shade stress decreased maize grain yield, dry matter, and nitrogen accumulation

2020 ◽  
Vol 112 (4) ◽  
pp. 2768-2776
Author(s):  
Jia Gao ◽  
Zheng Liu ◽  
Bin Zhao ◽  
Shuting Dong ◽  
Peng Liu ◽  
...  
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Nitrogen Accumulation ◽  
Maize Grain Yield ◽  
Maize Grain

Changing of Vegetative to Reproductive Ratio as a Response to Different Sowing Dates in Sunflower

Helia ◽  
2018 ◽  
Vol 41 (69) ◽  
pp. 253-266
Author(s):  
Ali Asghar Aliloo
Keyword(s):  
Edible Oils ◽  
Sowing Date ◽  
Biodiesel Production ◽  
Growing Degree Days ◽  
Comprehensive Model ◽  
Yield Losses ◽  
Degree Days ◽  
North West ◽  
Long Period ◽  
Sowing Dates

AbstractSunflower is an important source for edible oils and biodiesel production. Its productivity is limited by many agronomical practices one of which is the sowing date. In this study, the effects of different sowing dates from early April to late June on phenology and yield of sunflower cultivars were investigated. The results showed that sunflower has a relatively long period of possible sowing dates, stretching from early April to late June in North West of Iran. However, delayed sowing dates significantly decreased the number of days needed for phenophases. For every day of delay, the model predicted (R2=0.97) a losing rate in achene yield by 22.2 kg h−1 from the first sowing date. For relationships between growing degree days (GDD) and yield, almost the same results were obtained. About 22 kg h−1 reduction (R2=0.79) in yield per day was estimated by GDD index when the average GDDs per day was 14.2. However, helio-thermal units (HTU) did not predict this reduction accurately. A suggested comprehensive model, that used the percent of yield losses and changes in vegetative to reproductive ratio, found a significant and positive relationship between the indices and yield losses. For all indices, an increase in vegetative to reproductive ratio resulted in increased grain yield losses.

A comparative analysis of the growth of sweet and forage sorghum crops. II. Accumulation of soluble carbohydrates and nitrogen

1986 ◽  
Vol 37 (5) ◽  
pp. 513 ◽  
Author(s):  
R Ferraris ◽  
DA Charles-Edwards
Keyword(s):  
Dry Matter ◽  
Plant Density ◽  
Nitrogen Concentration ◽  
Sowing Date ◽  
Soluble Carbohydrates ◽  
Growth Stages ◽  
Degree Days ◽  
Forage Sorghum ◽  
Density Effects ◽  
Sowing Dates

Well-watered crops of sweet sorghum (cv. Wray) and forage sorghum (cv. Silk) were grown in south-eastern Queensland. Treatments consisted of four sowing dates, two intra-row spacings and harvests taken at six physiological growth stages from the third ligule to 3 weeks after grain maturity. Plant density effects on the concentration of sugars and nitrogen were slight, and changes in yields of these components were a function of density effects on dry matter yields. At any growth stage, the concentration of sugars in both cultivars was decreased with delay in sowing date. The delay in sowing date led to an increased nitrogen concentration in cv. Wray, but in cv. Silk the nitrogen concentration was highest in early and late sowings. At maturity, the concentration of sugars in cv. Wray averaged 40'70, 10 times the level in cv. Silk. In both cultivars, accumulation was a near linear function of either time or radiation sum. The partitioning of carbohydrate differed little between cultivars but altered with their ontogeny. The efficiency of light use for sugars production was greater in cv. Wray and altered with ontogeny. In contrast, concentration of nitrogen was similar for both cultivars and decreased curvilinearly with time or degree days. The partitioning of nitrogen altered with ontogeny and the amount partitioned to leaf material was greater in cv. Silk pre-anthesis but was less post-anthesis. Yield of stem sugars in cv. Wray exceeded 10 t ha-1 when the crops were sown early in the season, but was only 3 t ha-1 with late-sown crops.

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