Assessment of the effect of ratooning pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics

1985 ◽  
Vol 104 (3) ◽  
pp. 589-593 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seed Yield ◽  
Cajanus Cajan ◽  
Pigeon Pea ◽  
Growth And Yield ◽  
Tropical Conditions ◽  
Total Seed ◽  
The University ◽  
University Of Ibadan ◽  
Better Than

SummaryPigeon pea (variety Cita-1) was sown on ridges at two plantings in the early and late seasons of 1983 at the University of Ibadan, Two to three weeks after the plants reached maturity and the pods had been harvested by hand-picking, the plants were either ratooned by cutting off the tops at a height of 30 and 60 cm or left intact.At the end of the first and second regrowths, the plants ratooned at 30 and 60 cm had performed better than those left intact in terms of growth and yield characters as well as seed yield. However, the plants ratooned at 30 cm performed best followed by those ratooned at 60 cm. The total seed yield from the planting was 3–6 times higher than if the crop had been harvested once.It would seem that ratooning at 30 cm would give the highest returns from a single planting under the prevailing lowland tropical conditions.

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics: 4. Effect of sowing depth

1983 ◽  
Vol 101 (2) ◽  
pp. 435-440 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seedling Emergence ◽  
Pigeon Pea ◽  
Field Trials ◽  
Growth And Yield ◽  
Plant Establishment ◽  
Sowing Depth ◽  
Tropical Conditions ◽  
Pea Seeds ◽  
Growth Development ◽  
Better Than

SUMMARYThe seeds of a dwarf variety of pigeon pea (cv. Cita-1) were sown at 2, 4, 6 or 8 cm depths in three field trials in 1981 and 1982, in order to evaluate the effect of sowing depth on seedling emergence and the subsequent growth, development and yield of the crop.In all trials, sowing pigeon-pea seeds deeper than 4 cm led to 1–2 days delay in seedling emergence, resulted in only 40–68% seedling emergence, reduced the development of the various growth and yield characters of the plant and significantly reduced seed yield. In two trials, plants from 4 cm sowing performed better than those from 2cm sowing in terms of development of growth and yield characters indicating that shallow sowing of pigeon pea prevents rapid and proper plant establishment.The results therefore indicate that the optimum sowing depth for pigeon pea is 4 cm under the prevailing lowland humid tropical conditions.

scholarly journals Agrometeorological Indices, Crop Phenology and Yield of Pigeon pea as Influenced by Pigeon pea (Cajanus cajan L.) based Intercropping System

2021 ◽  
Vol 10 (11) ◽  
pp. 387-396
Author(s):  
S. N. Chatte M. G. Jadhav ◽  
D. S. Dhekane I. A. B. Mirza ◽  
K. K. Dakhore S. S. More
Keyword(s):  
Cajanus Cajan ◽  
Pigeon Pea ◽  
Field Investigation ◽  
Growth And Yield ◽  
College Of Agriculture ◽  
Crop Phenology ◽  
Stover Yield ◽  
Equivalent Yield ◽  
Better Than ◽  
Agricultural Meteorology

A field investigation was conducted at experimental farm, Department of Agricultural Meteorology, located at college of Agriculture, V.N.M.K.V, Parbhani during kharif season of 2019-20. The experiment was laid out in RBD with three replication, under this study there were nine treatments viz. T1 (Pigeon pea + Sorghum), T2 (Pigeon pea + Maize), T3 (Pigeon pea + Soybean), T4 (Pigeon pea + Sesamum), T5 (Pigeon pea), T6 (Sorghum), T7 (Maize), T8 (Soybean), T9 (Sesamum). In pigeon pea the highest total agrometeorological indices (GDD, HTU and PTU) accumulated by intercropped treatment T1 as compared to sole, by sorghum, maize and sesamum was highest in intercropped treatment i.e. (T1), (T2) and (T4) than in sole whereas, the accumulated agrometeorological indices by soybean was highest in sole treatment i.e. (T8) than intercropped (T3). Significantly higher Pigeon pea equivalent yield was attained with treatment T3 followed by T4, lowest recorded in T1 intercropping system. The highest stalk / stover yield was attained by T2 as compared to sole whereas, lowest was recorded in T8. Treatment T3 performed better than other and this treatment was better in terms of growth and yield attributing characters.

Flowering and pod and seed development in pigeon pea (Cajanus cajan)

1990 ◽  
Vol 115 (3) ◽  
pp. 327-335 ◽  
Author(s):  
A. O. Togun ◽  
T. O. Tayo
Keyword(s):  
Seed Development ◽  
Seed Yield ◽  
Cajanus Cajan ◽  
Pigeon Pea ◽  
Field Trials ◽  
Flowering Period ◽  
Physiological Maturity ◽  
Terminal Inflorescence ◽  
Total Seed ◽  
Ibadan Nigeria

SUMMARYFlower, pod and seed development were studied in the cultivars Cita-1 and Cita-2 in two field trials in 1985–86, in Ibadan, Nigeria. Flowering within any inflorescence was acropetal. On each plant the terminal inflorescence was the first to flower and, generally, inflorescences developed basipetally. A total of 569 flowers (mean of five plants) opened on Cita-1; of these, 20 were on the terminal inflorescence, 130 on axillary inflorescences and 419 on inflorescences on primary branches. For the 605 flowers (mean of five plants) which opened on Cita-2, the distribution was 19, 161 and 425, respectively.On Cita-1, 158 pods formed on average, of which 7 were on the terminal inflorescence, 33 on axillary inflorescences and 118 on inflorescences on primary branches lower down the plant. On Cita-2, for the 185 pods counted at maturity, the distribution was 8, 43 and 134, respectively. Some 72 and 69% of the total number of flowers which opened on Cita-1 and Cita-2, respectively, were aborted. In both cultivars, 99% of the mature pods were formed from flowers which opened within 24 days of the start of anthesis; the number of pods retained largely determined seed yield. The inflorescences which developed on the primary branches contributed 70% (Cita-1) and 66% (Cita-2) of the total seed yield. Early-formed pods were heavier than those formed later. Individual pods attained physiological maturity 35–42 days after successful pollination of the flower. At physiological maturity of the pod, the seed contained 3·72 % N, 0·45% P and 2·76% K, and the husk contained 1·98% N, 0·16% P and 1·96% K. The majority of open flowers which aborted were produced on primary branches, indicating that the primary branches have the greatest potential for increasing seed yield. A shorter flowering period might ensure greater retention of open flowers.

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics: 5. Effect of planting configuration

1983 ◽  
Vol 101 (2) ◽  
pp. 441-445 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Population Density ◽  
Seed Yield ◽  
Cajanus Cajan ◽  
Plant Size ◽  
Pigeon Pea ◽  
Field Trials ◽  
Growth And Yield ◽  
Local Conditions ◽  
Growth Development ◽  
Vegetative Characters

SUMMARYIn two field trials in 1982, the seeds of pigeon pea (cv. Cita-1) were planted at three configurationsof0·6 x 0·2m;0·4 x 0·3 m and 0·35 x 0·35m(on 14 April and 24 June)giving the same projected population density of 83 000 plants/ha for each configuration, in order to evaluate the best planting configuration for maximum productivity of the crop.In the first trial, the 0·35 x 0·35 m configuration developed the highest magnitude of vegetative characters whilst the 0·4 x 0·3 m configuration had the highest number of seed-bearing pods, although seed yield was similar in all the treatments. In the second trial, the 0·4 x 0·3 m configuration developed the highest magnitude of growth and yield characters and thereby out-yielded the other two configurations.The results show that in the early planting of pigeon pea, population density per se is most important in determining seed yield whereas planting configuration also becomes important in late planting where plant size is reduced as a consequence of the prevailing local conditions.

Compensatory growth and yield of pigeon pea (Cajanus cajan) following pod removal at different stages of reproductive growth

1980 ◽  
Vol 95 (2) ◽  
pp. 487-491 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seed Yield ◽  
Field Experiments ◽  
Pigeon Pea ◽  
Pot Experiment ◽  
Growth And Yield ◽  
Dry Matter Accumulation ◽  
Vegetative Development ◽  
Tropical Conditions ◽  
Pod Development ◽  
Subsequent Flowering

SUMMARYAll the pods on pigeon-pea plants were removed after 1, 2 or 3 weeks of flowering in a pot experiment and in one field trial, in order to evaluate the compensatory ability of the crop under humid tropical conditions.Pod removal after 1 or 2 weeks of flowering led to an immediate significantly higher vegetative development and dry-matter accumulation compared with the control. Subsequent flowering led to greater pod production and pod yield than the control with seed yield increased by 21 and 50%, respectively, in the pot experiment while pod removal after 1 week of flowering increased seed yield by 15% in the field. The removal of pods after 3 weeks of flowering was detrimental to subsequent pod development and seed yield which was decreased by 56 and 34% in the pot and field experiments, respectively.It would seem that the loss of pods produced soon after flowering starts, before active pod filling begins, can be tolerated by pigeon peas, whereas the loss of fully elongated and actively filling pods would significantly reduce seed yield in the crop.

Effect of rust (Phakopsora pachyrhizi) on soybean yield and quality in south-eastern Queensland

1979 ◽  
Vol 30 (5) ◽  
pp. 883 ◽  
Author(s):  
HJ Ogle ◽  
DE Byth ◽  
R McLean
Keyword(s):  
Seed Yield ◽  
Field Trial ◽  
Seed Weight ◽  
Growth And Yield ◽  
Phakopsora Pachyrhizi ◽  
Yield Losses ◽  
Yield And Quality ◽  
Sowing Seed ◽  
The University ◽  
Filled Seeds

In a field trial conducted at the University of Queensland Research Farm, Redland Bay in 1976, plots of soybeans were protected from rust, Phakopsora pachyrhizi, with mancozeb sprays for varying periods after sowing. Seed yield losses were 60–70% in the most severely rusted plots. In a glasshouse trial, rust inoculations were commenced at regular intervals during growth, and yield was reduced by 95% in plants inoculated immediately prior to flowering. In both trials, reduced yield was associated with reductions in the number of filled pods per plant, the number of filled seeds per plant and seed weight. The oil but not the protein content of the seed was also reduced in the more severely rusted treatments in the field trial.

scholarly journals Effects of Plant Density and Planting Pattern on Growth and Seed Yield of Groundnuts [Arachis hypogaea (l.)] in the Wet Middleveld of Eswatini

2020 ◽  
pp. 1-12
Author(s):  
N. Magagula ◽  
M. P. Mabuza ◽  
N. Zubuko
Keyword(s):  
Arachis Hypogaea ◽  
Seed Yield ◽  
Growth Stage ◽  
Plant Density ◽  
Growth And Yield ◽  
Optimum Growth ◽  
Planting Pattern ◽  
Arachis Hypogaea L ◽  
High Plant Density ◽  
The University

The most appropriate plant density and planting pattern to use for optimum growth and yield of groundnuts (Arachis hypogaea L.) in Eswatini among those currently used is not known, as the patterns are highly influenced by environmental conditions in specific regions. A field trial was conducted with the objective of determining the optimum plant density and planting pattern for groundnut in the Wet Middleveld of Eswatini. The experiment was conducted at the University of Eswatini, Luyengo Campus during the 2018/2019 cropping. The treatments consisted of three planting densities (i.e. 88,889 plants/ha, 44,444 plants/ha, and 29,630 plants/ha) and two planting patterns (i.e. Ridges and Raisedbeds) in a split plot arrangement. Results showed that all the measured parameters including seed yield were not significantly different in all treatments. However, the highest seed yield was obtained at low plant density which was 71.4 kg/ha followed by 568 kg/ha at medium and the least was 434 kg/ha at high plant density. The high plant density (88889 plants/ha) obtained the highest value of dry biomass (13018 kg/ha) at ridges which was higher than 3859 kg/ha obtained at the low plant density (29630 plants/ha) at raised beds at R6 growth stage. The ridges at the intermediate plant density (44444 plants per hectare) obtained the highest shelling percentage of 59.67% while the lowest (56%) shelling percentage was obtained at raised beds at 88889 plants per hectare. It is concluded that groundnuts at raised beds with low plant density yielded higher than those at ridges with high plant density. It is therefore, recommended that groundnuts be planted at raised beds with low plant density to increase groundnut production and for ease of harvesting.

Agronomic studies on pigeon pea (Cajanus cajan (L.) Millsp.) III.* Responses to defoliation

1975 ◽  
Vol 26 (1) ◽  
pp. 67 ◽  
Author(s):  
JO Akinola ◽  
PC Whiteman
Keyword(s):  
Plant Height ◽  
Seed Production ◽  
Seed Yield ◽  
Cajanus Cajan ◽  
Management System ◽  
Dry Matter ◽  
Pigeon Pea ◽  
Early Maturing ◽  
Nitrogen Yields ◽  
Reproductive Material

Two early-maturing and two late-maturing accessions of Cajanus cajan grown in the field for 161 days were defoliated to 90 cm 'stubbles' every 4,8,12 or 16 weeks over a period of 72 weeks. Evidence from total and seasonal dry matter and nitrogen yields, stand survival, and stubble yield at the termination of the experiment suggested that 8- and 12-week defoliation frequencies could be successfully integrated to incorporate cattle grazing and forage and seed production into a single management system. The late-maturing accessions were shown clearly to be better adapted to cutting, provided that basal green leaves always remained on the stubble. Defoliation of the accession UQ50 to reduce plant height to facilitate subsequent harvesting led to a reduced annual seed yield. The first seed crop was lost, as 'topping' removed the reproductive material.

scholarly journals Performance of Sunflower Genotypes in Non-Saline and Saline Soils of Southern Bangladesh

2018 ◽  
Vol 21 (1) ◽  
pp. 1-7
Author(s):  
MK Hossain ◽  
MM Islam ◽  
AA Mamun ◽  
SM Abdullah Al Mamun
Keyword(s):  
Seed Yield ◽  
Saline Soil ◽  
Block Design ◽  
Research Work ◽  
Germination Percentage ◽  
Growth And Yield ◽  
Saline Soils ◽  
Head Diameter ◽  
Seed Head ◽  
Total Seed

A research work was conducted with three sunflower genotypes to evaluate their performance in saline and non-saline soil after harvesting of T. Aman rice. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Three genotypes significantly influenced almost all the growth and yield parameters in both non-saline and saline field. Genotype Hysun-33 showed maximum germination percentage in non-saline soil but minimum in saline soil. Whereas, KUSL- 1 performed the best in saline soil but worst in non-saline condition. Hysun-33 produced maximum leaf at flowering in both conditions but minimum leaf by BARI Sunflower-2 in saline soil and by KU-SL-1 in non-saline soil. In both non-saline and saline soils, plant height at flowering, head diameter, total seed head-1 and filled seed head-1 were maximum for the genotype Hysun-33 and that of minimum for the genotype BARI Sunflower-2. Genotype KU-SL-1 showed maximum value for 1000- seed weight followed by Hysun-33 in both saline and non-saline soils. In case of seed yield head-1, Hysun-33 performed best in saline soils but worst in non-saline soil. In non-saline soil, KU-SL-1 produced maximum seed yield head-1. Biomass at harvest, head diameter and number of filled seed head-1 was well correlated with number of seed head and seed yield head-1. Thus genotype Hysun-33 may be considered as best for saline and KU-SL-1 for non-saline soil. Bangladesh Agron. J. 2018, 21(1): 1-7

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