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.

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.

Effect of sowing depth on plant establishment, tillering capacity and other agronomic characters of cereals

1977 ◽  
Vol 89 (1) ◽  
pp. 161-167 ◽  
Author(s):  
A. Hadjichristodoulou ◽  
Athena Della ◽  
J. Photiades
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Seedling Emergence ◽  
Field Trials ◽  
Clay Soils ◽  
Plant Establishment ◽  
Agronomic Characters ◽  
Plant Vigour ◽  
Sowing Depth ◽  
Established Plant

SummaryIn field trials conducted over 8 years the effect of sowing depth on plant establishment, tillering capacity, plant height, grain yield, top growth weight and patterns of root development of wheat and barley was studied. Establishment, number of grainbearing tillers per established plant, plant height at maturity and grain yield and top growth weight per plot as well as per plant were reduced with increase in sowing depth from 2 to 20 cm. Seedling emergence started earlier from large seeds and from shallow sowing. Establishment from large seeds of two varieties was better, especially for deep sowing and in clay soils. Several patterns of root and tiller development were observed at various sowing depths. Varietal differences in stand establishment under field conditions were not related to plant height. It was concluded that deep sowing beyond around 10 cm should be avoided because stand and plant vigour are adversely affected.

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics:2. Effect of reduced assimilatory capacity

1982 ◽  
Vol 98 (1) ◽  
pp. 71-77 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Pigeon Pea ◽  
Field Trials ◽  
Growth And Yield ◽  
Vegetative Stage ◽  
Dry Matter Accumulation ◽  
Filling Stage ◽  
Growth Development ◽  
Seed Yields

SUMMARYIn two field trials in 1980, 33, 67 or 100% of the leaves on pigeon pea (cv. Cita-1) plants were removed either at the vegetative stage, the onset of flowering, or at the rapid pod-filling stage, in order to evaluate the effect of reduced assimilatory capacity on the growth and yield characteristics of the crop.Reduction in the assimilatory capacity of the plant led to significant reduction in the vegetative growth, dry-matter accumulation and seed yield of the defoliated plants compared with the undefoliated control such that 33, 67 or 100% defoliation led to 15–55, 40–60 and 75–80% reduction in seed yield respectively, at both trials. Also, defoliation was more damaging to crop performance if carried out from the onset of flowering than at the vegetative stage. Thus, the seed yields of plants defoliated at the onset of flowering and the rapid pod-filling stage were 30–80 and 40–45 % lower than the yield from plants defoliated at the vegetative stage in both trials.

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.

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics:1. Effect of plant population density

1982 ◽  
Vol 98 (1) ◽  
pp. 65-69 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Growth Rate ◽  
Population Density ◽  
Pigeon Pea ◽  
Field Trials ◽  
Dry Matter Accumulation ◽  
Population Densities ◽  
Tropical Conditions ◽  
Growth Development ◽  
Net Assimilation ◽  
Vegetative Characters

SUMMARYThe growth, development and yield of pigeon pea (cv. Cita-1) grown at three population densities of 27 000, 55000 and 83000 plants/ha were evaluated in two field trials during the growing season of 1980.The results obtained showed that there was a progressive reduction in the developmentv per plant of vegetative characters, dry-matter accumulation and yield characters as population density increased. The calculated growth rates (net assimilation rate, crop growth rate, relative growth rate and leaf area ratio) were more or less the same at all population densities. The yields of seeds were 0·39 and 0·51 t/ha for the lowest population density, 0·43 and 0·65 t/ha for the medium population density and 0·58 and 0·75 t/ha for the highest population density for the two trials respectively.It would seem, therefore, that under the prevailing lowland humid tropical conditions, a population density of at least 80000 plants/ha would be needed to ensure maximum productivity in the sole cropping of pigeon pea.

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics:3. Effect of early loss of apical dominance

1982 ◽  
Vol 98 (1) ◽  
pp. 79-84 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Apical Dominance ◽  
Pigeon Pea ◽  
Field Trials ◽  
Pot Experiment ◽  
Dry Matter Accumulation ◽  
Vegetative Development ◽  
Early Loss ◽  
Apical Bud ◽  
Tropical Conditions ◽  
Growth Development

SUMMARYIn a pot experiment and two field trials, the apical portionof the main stem of a dwarf variety of pigeon pea (ev. Cita-1) was removed at 3 or 7 weeks after sowing in order to evaluate the effect of apical bud removal, during the vegetative stage of growth, on the subsequent growth, development and yield of the crop.The early loss of apical dominance led, in all cases, to increased vegetative development, reduced plant height (except in one of the field trials), higher dry-matter accumulation and more pods per plant, with the treatment effect on number of pods being related to the number of branches developed. The yield of seeds was significantly increased by the early loss of apical dominance in the pot experiment and second field trial.The results therefore show that an early loss of apical dominance, as could happen with insect and pest attack, may not be damaging to the vegetative growth and seed yield of pigeon pea under the prevailing lowland humid tropical conditions.

Efficacy of Clonostachys rosea strain ACM941 and fungicide seed treatments for controlling the root rot complex of field pea

2003 ◽  
Vol 83 (3) ◽  
pp. 519-524 ◽  
Author(s):  
A. G. Xue
Keyword(s):  
Root Rot ◽  
Untreated Control ◽  
Seedling Emergence ◽  
Field Trials ◽  
Field Pea ◽  
Seed Treatments ◽  
Clonostachys Rosea ◽  
Pea Root ◽  
Pea Root Rot ◽  
Better Than

The efficacy of seed treatments with bioagent ACM941 (a strain of Clonostachys rosea), its formulated products GB116 and ACM941-Pro, and common fungicides for the control of pea root rot complex were examined in six field trials in western Canada from 1996 to 2000. The effects on seedling emergence, root rot severity, and yield varied among years. In trials 1 and 2 (1996–1997), none of the treatments significantly reduced root rot severity or increased yield. ACM941 + Thiram 75WP was the most effective treatment, increasing emergence by 17.4% and was significantly better than that of the untreated controls. In trials 3 and 4 (1997–1998), Apron FL alone and ACM941 + Apron FL were significantly better than the untreated control, increasing emergence by 6.2 and 7.7%, and yield by 10.8 and 11.5%, respectively. In trials 5 and 6 (1999–2000), AC M 941 and GB116 were equally the most effective treatments, increasing emergence by 11.5 and 12.2%, and yield by 8.2 and 6.3%, respectively. These effects were significantly greater than that of the untreated control, but not significantly different from those of Apron FL or Vitaflo-280. ACM941-Pro was developed and tested in 2000 only, and it increased emergence by 17.1% and reduced root rot severity by 29.6%. Key words: Bioagent, Clonostachys rosea, field pea, Pisum sativum, pea root rot complex (PRRC), seed treatment, fungicide

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.

scholarly journals The Effects of Duration of Cooking Pigeon Pea (Cajanus Cajan) Seeds on the Performance and Carcass Characteristics of Broiler Chicks

2021 ◽  
Vol 37 (1) ◽  
pp. 13-24
Author(s):  
U. D. Matthews ◽  
J. J. Omage ◽  
T. S. B. Tegbe ◽  
I. A. Adeyinka
Keyword(s):  
Crude Protein ◽  
Control Diet ◽  
Carcass Characteristics ◽  
Pigeon Pea ◽  
Broiler Chicks ◽  
Trial Period ◽  
Feeding Trial ◽  
Final Weight ◽  
Pea Seeds ◽  
Better Than

Two hundred and seventy (270) one week old broiler chicks of Aboricae breeds were fed diets containing pigeon pea seeds boiled for 0, 30, 40, 50 and 60 minutes on a control diet containing full-fat soy bean. Birds were randomly assigned to pens and treatments in a completely randomised design trial. There were 3 replications of the 6 treatments and 15 birds per pen. 23% crude protein (CP) diets were fed during the starter phase and 20% CP diet during the finisher phase. Feed and water were supplied ad-libitum throughout the 8-week trial period. At the end of the feeding trial, 2 birds were selected from each oen and slaughtered for carcass evaluation. During the starter and finisher phases, feed intake of birds were similar across treatments. The final weight gain of birds fed the control diet were significantly better than those of birds fed the raw or boiled pigeon pea during the 2 phases. Birds fed pigeon pea seeds boiled for 30, 40, 50 or 60 minutes had better (P<0.05) gain and final weights compared to those fed raw pigeon pea. Slaughter weights of birds fed the control diet and diets with pigeon pea boiled for 30, 40, 50 or 60 minutes were similar and significantly (P<0.05) better than those of birds fed raw pigeon pea diet.  

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.

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