scholarly journals The effect of timing of shade on development, dry matter production and light-use efficiency in groundnut (Arachis hypogaea L.) under field conditions

1990 ◽  
Vol 41 (4) ◽  
pp. 633 ◽  
Author(s):  
CM Stirling ◽  
JH Williams ◽  
CR Black ◽  
CK Ong
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Incident Light ◽  
Light Use Efficiency ◽  
Matter Production ◽  
Arachis Hypogaea L ◽  
Leaf Area Expansion ◽  
Use Efficiency ◽  
Area Expansion ◽  
Final Harvest

During the rainy season in India, bamboo screens intercepting approximately 46% of the incident light were used to simulate the effect of shading by a cereal grown as an intercrop with groundnut (Arachis hypogaea L.). The treatments comprised an unshaded control and two durations of shading extending from peg initiation (T1) and the onset of pod filling (T2) to final harvest. Plant height was greatest in the T1 crop, but the maximum rates of leaf development on the main stem, leaf area expansion and pod production were similar in all crops. Shading appeared to reduce the rate of the linear growth phase because the reduced light interception was not entirely offset by an increase in light-use efficiency. Premature senescence in the shaded crops coincided with the virtual cessation of pod production, although continued allocation of dry matter to reproductive structures in the T1 crop resulted in a greater proportion of pods being filled at final harvest than in the other treatments. The responses of groundnut to timing of shade are discussed in terms of their implications for the selection of improved crop combinations for intercropping.

scholarly journals Dry Matter Production and Harvest Index of Groundnut (Arachis hypogaea L.) Varieties Under Irrigation

2013 ◽  
Vol 5 (8) ◽  
Author(s):  
A. A. Mukhtar ◽  
B. A. Babaji ◽  
S. Ibrahim ◽  
H. Mani ◽  
A. A. Mohammad ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Harvest Index ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Matter Production ◽  
Arachis Hypogaea L

Dry matter production, yield and yield components of groundnut (Arachis hypogaea L.) genotypes as influenced by zinc and iron through ferti-fortification

2017 ◽  
Vol 51 (04) ◽  
Author(s):  
Sai Surya Gowthami V. ◽  
Ananda N.
Keyword(s):  
Arachis Hypogaea ◽  
Yield Components ◽  
Dry Matter ◽  
Kernel Weight ◽  
Production Yield ◽  
Dry Matter Production ◽  
Rabi Season ◽  
Matter Production ◽  
Arachis Hypogaea L ◽  
Yield And Yield Components

A field experiment on deep black soils during rabi season of 2014-15 to study the influence of ferti-fortification on dry matter production, yield and yield components viz., number of pods plant-1, pod weight, 100 kernel weight and shelling percentage of groundnut genotypes. Among groundnut genotypes, ICGV-00351 recorded significantly higher pod, kernel and haulm yield (2656, 1934 and 2894 kg ha-1, respectively), dry matter production at harvest (36.54 g plant-1), number of pods plant-1 (33.66), pod weight (31.81 g plant-1), 100 kernel weight (31.59 g) and shelling percentage (72.77 %) as compared to other genotypes. Among micronutrients application, higher dry matter production at harvest (43.60 g plant-1), pod, kernel and haulm yield (2789, 2051 and 3080 kg ha-1, respectively), number of pods plant-1 (34.08), pod weight (32.25 g plant-1), 100 kernel weight (31.61 g) and shelling percentage (73.21 %) recorded with soil (25 kg ha-1) and foliar (0.5 %) application of ZnSO4 (S4) as compared to control.

Nitrogen-limited light use efficiency in wheat crop simulators: comparing three model approaches

2015 ◽  
Vol 154 (6) ◽  
pp. 1090-1101 ◽  
Author(s):  
A. M. RATJEN ◽  
H. KAGE
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Wheat Crop ◽  
Light Use Efficiency ◽  
Data Set ◽  
Area Index ◽  
N Concentration ◽  
Matter Production ◽  
Use Efficiency ◽  
Critical N Concentration

SUMMARYThree different explanatory indicators for reduced light use efficiency (LUE) under limited nitrogen (N) supply were evaluated. The indicators can be used to adapt dry matter production of crop simulators to N-limited growth conditions. The first indicator, nitrogen factor (NFAC), originates from the CERES-Wheat model and calculates the critical N concentration of the shoot as a function of phenological development. The second indicator, N nutrition index (NNI), calculates a critical N concentration as a function of shoot dry matter. The third indicator, specific leaf nitrogen (SLN) index (SLNI), has been newly developed. It compares the actual SLN with the maximum SLN (SLNmax). The latter is calculated as a function of the green area index (GAI). The comparison was based on growth curves and fitted to empirical data, and was carried out independently from a dynamic crop model. The data set included four growing seasons (2004–2006, 2012) in Northern Germany and seven modern bread wheat cultivars with varying N fertilization levels (0–320 kg N/ha). The influence of N shortage on LUE was evaluated from the beginning of stem elongation until flowering. With the exception of 2005, the highest productivity was observed for the highest N level. A moderate N shortage primarily reduced GAI and therefore light interception, while LUE remained stable under moderate N shortage. The relative LUE (rLUE) of a specific day was defined as the ratio of actual to maximal LUE. None of the indicators was proportional to rLUE, but the relationships were described well by quadratic plateau curves. The correlation between simulated and measured rLUE was significant for all explanatory indicators, but different in terms of mean absolute error and coefficient of determination (R2). The performance of SLNI and NNI was similar, but the goodness of prediction was much lower for NFAC. Compared with NNI and NFAC, SLNI corresponded to leaf N and was therefore sensitive to N translocation from leaves to growing grains during the reproductive stage. For this reason, SLNI may have the potential to improve simulation of dry matter production in wheat crop simulators.

Dry Matter Accumulation and Nutrient Uptake of High-Yielding Peanut (Arachis Hypogaea L.) Grown in a Sandy Soil1

1988 ◽  
Vol 15 (1) ◽  
pp. 5-8 ◽  
Author(s):  
J. Halevy ◽  
A. Hartzook
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Average Rate ◽  
Dry Matter Production ◽  
Dry Matter Accumulation ◽  
Total Uptake ◽  
Matter Production ◽  
Arachis Hypogaea L ◽  
Npk Uptake ◽  
High Yields

Abstract Growth and NPK uptake of peanut of cultivar Shulamit (Arachis hypogaea L.) grown in a sandy soil (Xeropsamment - Torripsamment) was investigated under favorable semi-arid conditions conducive to high yields. The rate of dry matter production was slow until flowering at 44 days after planting when only 6% of the total dry matter had been produced. From flowering until 111 days. 58% of the total dry matter was produced with an average rate of 97 kg DM ha-1 day-1. Thereafter, from 112 days until 128 days, at the pod ripening stage, the rate was 233 kg DM ha-1 day-1. Total dry matter production was 11,200 kg ha-1, of which 54% was in the leaves and stems and 46% in the pods. The pod dry matter yield was 5200 kg ha-1. The total uptake of N and P followed generally that of dry matter production, whereas highest K uptake occurred at 128 days and then decreased by 26% at harvest time. The total uptake of N, P, and K was 300, 27 and 244 kg ha-1, respectively. At 128 days the N, P, and K in the pods was 63, 71, and 16% of the total uptake of N, P, and K, respectively.

Effects of Variety and Spacing on Growth, Development and Dry Matter Distribution in Groundnut (Arachis hypogaea L.) at Two Locations in Nigeria

1979 ◽  
Vol 15 (4) ◽  
pp. 339-351 ◽  
Author(s):  
J. Y. Yayock
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Plant Density ◽  
Unit Area ◽  
Matter Distribution ◽  
Dry Matter Distribution ◽  
Matter Production ◽  
Arachis Hypogaea L ◽  
Production And Distribution ◽  
Growth Development

SUMMARYAn investigation for 2 years at Kano and 1 year at Samaru evaluated the effects of plant density on vegetative growth, development and dry matter production and distribution of five varieties of groundnut. Growth and branching of individual plants were reduced at high populations but more dry matter was produced per unit area. Dense plants, particularly Spanish 205, developed a larger leaf area earlier in the season and were presumably able to make better use of light. Varieties F439.4 and 439.2 suffered the least reduction in the number of vegetative branches but the extra branches contributed few useful reproductive nodes.

scholarly journals Plant Type and Dry Matter Production in Peanut(Arachis hypogaea L.) Cultivars. I. Varietal differences in dry matter production.

1994 ◽  
Vol 63 (2) ◽  
pp. 289-297 ◽  
Author(s):  
Lawrence Misa ABOAGYE ◽  
Akihiro ISODA ◽  
Hiroshi NOJIMA ◽  
Yasuo TAKASAKI ◽  
Takao YOSHIMURA ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Plant Type ◽  
Varietal Differences ◽  
Matter Production ◽  
Arachis Hypogaea L

scholarly journals Plant Type and Dry Matter Production in Peanut (Arachis hypogaea L.) Cultivars. II. Varietal differences in radiation interception.

1995 ◽  
Vol 64 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Lawrence Misa ABOAGYE ◽  
Akihiro ISODA ◽  
Hiroshi NOJIMA ◽  
Yasuo TAKASAKI ◽  
Takao YOSHIMURA ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Plant Type ◽  
Radiation Interception ◽  
Varietal Differences ◽  
Matter Production ◽  
Arachis Hypogaea L
Sign in / Sign up

Export Citation Format

Share Document