scholarly journals Analysis of Grain Production in Rice Plant. : I. Influence of nitrogen levels on light receiving coefficient and respiration rate. : II. Influence of nitrogen levels on light receiving coefficient and dry matter production.

1957 ◽  
Vol 26 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Tomoshiro TAKEDA ◽  
Atsuhiko KUMURA
Keyword(s):  
Respiration Rate ◽  
Rice Plant ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Grain Production ◽  
Nitrogen Levels ◽  
Matter Production

Changes in growth rate and morphology of perennial ryegrass swards at high and low nitrogen levels

1971 ◽  
Vol 77 (1) ◽  
pp. 123-134 ◽  
Author(s):  
Alison Davies
Keyword(s):  
Growth Rate ◽  
Perennial Ryegrass ◽  
Dry Matter ◽  
Crop Growth ◽  
Dry Matter Production ◽  
Appreciable Effect ◽  
Crop Growth Rate ◽  
Nitrogen Levels ◽  
Matter Production ◽  
Time Of Year

SummaryThe nitrogen requirements for maximum production of perennial ryegrass swards in August/September were shown to be of the order of 4 kg N/ha/day. Further increases above this level had no appreciable effect on dry-matter production, leaf area or light intercepted, but maximum tiller numbers were considerably enhanced. Shortage of nitrogenous fertilizer had comparatively little effect on crop growth rate in the early stages of regrowth, but thereafter caused the rate to fall increasingly short of potential. At high fertilizer levels crop growth rate based on total above-ground parts was linearly related to percentage light intercepted in the first month after defoliation, but values subsequently became erratic and at times negative. This change in crop growth rate and the resulting halt in effective net dry-matter production could be associated with the overall pattern of leaf and tiller formation and death, maximum net yield being achieved at the point in time when three new leaves had been produced on each tiller since cutting. It is concluded that in August and September worth-while increases in harvestable net dry matter are unlikely to occur after this stage has been reached, and that managements based on the maintenance of a complete crop cover are not likely to be successful at this time of year.

scholarly journals Effects of nitrogen fertilizer and elevated CO2 on dry matter production and yield of rice cultivars

1970 ◽  
Vol 34 (2) ◽  
pp. 313-322 ◽  
Author(s):  
MA Razzaque ◽  
MM Haque ◽  
MA Hamid ◽  
QA Khaliq ◽  
ARM Solaiman
Keyword(s):  
Elevated Co2 ◽  
Field Condition ◽  
Dry Matter ◽  
Dry Weight ◽  
Dry Matter Production ◽  
Optimum Dose ◽  
Rice Cultivars ◽  
Nitrogen Levels ◽  
Matter Production ◽  
Growing Conditions

A pot experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during the year 2003 to find out the dry matter production and yield of rice cultivars under different nitrogen levels and growing conditions. Thirty-day old single seedlings were transplanted in pot and were placed in 3 growing conditions, such as i) Open top chamber (OTC) with elevated CO2 (570 ± 50 ppm), ii) OTC with ambient CO2 (360 ± 50 ppm), and iii) open field condition. The three nitrogen levels used were, i) control, ii) optimum dose, and iii) supra optimum dose. Three rice cultivars used in the experiment were, i) BRRI dhan 39, ii) Khashkani, and iii) Shakkarkhora. Rice yield and dry matter production respond significantly to different environments. Increasing atmospheric CO2 increased grain yield. Stem dry weight, leaf dry weight, leaf sheath dry weight and root dry weight were increased in elevated CO2 than ambient CO2 and field condition. BRRI dhan 39 gave highest yield (50.82 g/plant) at supra optimum N level in elevated CO2. Local variety gave similar result under elevated CO2 in optimum and supra optimum N levels. The lowest yield (15.09 g/plant) was produced by Shakkorkhora in field condition with no nitrogen application. Key Words: Nitrogen; elevated CO2; yield; dry matter.DOI: 10.3329/bjar.v34i2.5804Bangladesh J. Agril. Res. 34(2): 313-322, June 2009

scholarly journals Cultivar Difference on Dry Matter Production and Grain Production in Two-rowed Barley of Warm Regions in Japan.

1996 ◽  
Vol 65 (2) ◽  
pp. 189-197
Author(s):  
Haruhiko YAMAMOTO ◽  
Naoyuki KAWADA ◽  
Hitoshi HONJO ◽  
Seiji HAYAKAWA ◽  
Yoshinori SUZUKI
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Grain Production ◽  
Matter Production ◽  
Cultivar Difference

scholarly journals Nodule damage by clover root weevil larvae in white clover swards

2002 ◽  
Vol 55 ◽  
pp. 246-251 ◽  
Author(s):  
P.J. Gerard
Keyword(s):  
White Clover ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Foliar Nitrogen ◽  
Nitrogen Levels ◽  
Matter Production ◽  
Clover Root ◽  
Small Plot ◽  
The Impact

The impact of clover root weevil larval populations was assessed in pure swards of Grasslands Prestige and Grasslands Kopu white clover in a small plot trial Nodule damage was very evident and both cultivars showed significant increases in nodule damage and decreases in percent foliar nitrogen in November in response to increasing winter larval numbers Dry matter production of Kopu in November was related to foliar nitrogen levels

Effect of Different Nitrogen Levels on Dry Matter Production, Canopy Structure and Light Transmission of Blackgram

2007 ◽  
Vol 6 (7) ◽  
pp. 1044-1050
Author(s):  
M.U. Kulsum ◽  
M.A. Baque ◽  
Anowara Akter ◽  
M.H. Kabir Shiragi ◽  
M.A. Karim
Keyword(s):  
Dry Matter ◽  
Light Transmission ◽  
Canopy Structure ◽  
Dry Matter Production ◽  
Nitrogen Levels ◽  
Matter Production

Response of chickpea (Cicer arietinum L.) varieties to nitrogen on a calcareous vertisols

2016 ◽  
Vol 50 (3) ◽  
Author(s):  
B. Sandhya Rani ◽  
T. Giridhara Krishna
Keyword(s):  
Cicer Arietinum ◽  
Seed Yield ◽  
Interaction Effect ◽  
Dry Matter ◽  
Block Design ◽  
Dry Matter Production ◽  
Yield Attributes ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Matter Production

An experiment was conducted during <italic>rabi</italic> season of 2010-12 to study the response of chickpea varieties to nutrients levels on a calcareous vertisols. The experiment comprised of four varieties i.e., NBeG-3, NBeG-28, JG-11 and KAK-2 and with four nitrogen levels i.e., 0, 20, 30 and 40 kg/ha laid out in factorial randomized block design with three replications. Among the varieties significantly higher dry matter production at harvest was recorded with JG-11 while it was lowest with KAK-2. More number of pods per plant and seed yield were recorded with JG-11 followed by NBeG-3 and NBeG-28, while lowest with KAK-2. Interaction effect among the different varieties and nitrogen levels was non significant with yield attributes. Significantly higher seed yield was recorded with JG-11 @ 40 kg of N/ha but was at par with N @ 20 and 30 kg /ha, followed by NBeG-3 and NBeG-28.

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