scholarly journals Grain Sorghum Response to Row Spacing and Plant Populations in the Texas Coastal Bend Region

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Carlos J. Fernandez ◽  
Dan D. Fromme ◽  
W. James Grichar
Keyword(s):  
Grain Sorghum ◽  
Plant Population ◽  
Growth And Yield ◽  
Row Spacing ◽  
Plant Populations ◽  
Single Row ◽  
Average Rainfall ◽  
Opportune Time ◽  
Lower Plant ◽  
Sorghum Bicolor L

Two grain sorghum (Sorghum bicolor L. Moench) studies were conducted in the Coastal Bend Region of Texas over a two-year period. In one study, sorghum growth and yield were compared when planted in a single row on beds or planted in twin rows on beds with different plant populations under dryland or irrigation. Above average rainfall occurred in May 2000 which resulted in twin rows at any plant population producing higher yields than the single row at lower plant population. In 2001, single-row plantings with either plant population (124,000–160,000 or 161,000–198,000 plants/ha) produced higher yield than twin rows planted at 161,000–198,000 plants/ha. Under irrigation, twin rows planted at 161,000–198,000 plants/ha produced higher yields than single row at the same population; however, no other yield differences were noted when row systems or plant populations were compared. In another study, 38 cm row spacings were compared with 76 cm row spacings under two plant populations. In 2000, when rains fell at an opportune time, no yield differences were noted; however, in 2001 with below average rainfall, the 76 cm plantings at 170,000–200,000 and 210,000–240,000 plants/ha produced higher yield than the 38 cm plantings at those same plant populations.

scholarly journals Grain Sorghum Response to Hybrid, Row Spacing, and Plant Populations along the Upper Texas Gulf Coast

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Dan D. Fromme ◽  
Carlos J. Fernandez ◽  
W. James Grichar ◽  
Rick L. Jahn
Keyword(s):  
Sorghum Bicolor ◽  
Gulf Coast ◽  
Grain Sorghum ◽  
Plant Population ◽  
Yield Reduction ◽  
Row Spacing ◽  
Plant Populations ◽  
Texas Gulf Coast ◽  
Net Returns ◽  
Average Rainfall

Grain sorghum (Sorghum bicolorL. Moench) along the upper Texas Gulf Coast is planted at different row spacings, plant populations, and hybrids according to grower preference and location. This study was conducted over a 3-year period (2001 to 2003) to determine the combination of hybrid, row spacing, and plant population on yield and net return per hectare. Below average rainfall for May and June occurred in 2002 and 2003 which resulted in lower yields than 2001. In 2001 and 2003, Dekalb (DK) 54 generally produced higher yields than Asgrow (A) 571 on the 51 cm row spacing. In 2002, no differences in grain sorghum yield were found when comparing both hybrids, plant populations, or row spacing with the exception of A 571 planted at 148,000 plants/ha on 102 cm centers which resulted in a yield reduction of at least 25%. When net returns were compared regardless of year or rainfall received, net dollar value per hectare tended to be higher for the 51 cm row spacing, especially with A 571.

The influence of inter-row spacing and plant population on the yield of peanuts at Katherine, N.T

1962 ◽  
Vol 2 (4) ◽  
pp. 54 ◽  
Author(s):  
LJ Phillips ◽  
MJT Norman
Keyword(s):  
Plant Population ◽  
Row Spacing ◽  
Clay Loam ◽  
Plant Populations ◽  
Kernel Yield ◽  
Multifactorial Experiment

In 1957-58 and 1958-59, Virginia Bunch and Natal Common peanuts were sown on Tippers clay loam at Katherine, N.T., in a multifactorial experiment at two inter-row spacings (2 ft and 3 ft), four plant populations (10, 20, 40 and 80 thousand per acre) and two dates. In 1960-61, Natal Common only was sown at the same inter-row spacings, at two dates, and at populations of 10, 20, 30 and 40 thousand per acre. Over two seasons, the yield of Virginia Bunch kernels was not significantly influenced by variation in population, though the yield of hay was 42 per cent higher at 80,000 plants per acre than at 10,000 plants per acre. Kernel yields from 2 f t rows were 14 per cent higher than from 3 f t rows. In the first two seasons, the yield of Natal Common kernels was lower at 80,000 plants per acre than at 40,000 plants per acre. Over three seasons, maximum kernel and h g yields were achieved at 40,000 plants per acre ; the kernel yield at this population was 35 per cent greater than at 10,000 plants per acre. With early-planted Natal Common, 2.ft rows gave an 11 per cent higher yield of kernels than 3 f t rows, but with later planting there was no significant effect of inter-row spacing. The optimum economic seeding rates were estimated approximately as 30 lb an acre for Virginia Bunch and 45 lb an acre for Natal Common.

Plant Population, Rainfall and Sorghum Production in Botswana. I. Results of Experiment Station Trials

1987 ◽  
Vol 23 (3) ◽  
pp. 335-347 ◽  
Author(s):  
M. J. Jones
Keyword(s):  
Plant Population ◽  
Row Spacing ◽  
Plant Populations ◽  
Experiment Station ◽  
Yield Parameters ◽  
Sorghum Production ◽  
Potential Maximum ◽  
Mathematical Relations

SUMMARYGeneral mathematical relations between yield parameters, plant populations and rainfall were developed for an indigenous sorghum from the results of 28 population/row spacing trials conducted at four sites over five seasons. Populations maximizing yield increased from 25 000 to 69 000 plants ha−1 over the rainfall range 200–700 mm (pre-planting to harvest total). Tillering partly compensated for low populations but yields from 10000 plants ha−1 at 300 and 600 mm rainfall were only 80 and 61% of potential maximum, respectively. Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.

scholarly journals Plant Spatial Arrangement Affects Growth, Yield, and Pod Distribution of Cayenne Peppers

HortScience ◽  
1994 ◽  
Vol 29 (3) ◽  
pp. 149-151 ◽  
Author(s):  
Dennis R. Decoteau ◽  
Heather A. Hatt Graham
Keyword(s):  
Growth Yield ◽  
Spatial Arrangement ◽  
Plant Population ◽  
Row Spacing ◽  
Plant Canopy ◽  
Plant Spacing ◽  
Population Densities ◽  
Higher Plant ◽  
Single Row ◽  
Pepper Plants

The effect of planting population density (as a function of in-row plant spacing and number of rows per bed) on the growth, yield, and pod distribution of cayenne pepper (Capsicum annuum var. annuum L. cv. Carolina Cayenne) was investigated in a 2-year study. In 1988, 15 -, 30-, 45-, and 60-cm in-row spacings in a single row were evaluated, and in 198915 -,30-, and 60-cm in-row spacings in single and double rows were evaluated. Plant population densities at these respective spacings ranged from≈ 11,100 to 44,400 and 11,100 to 88,900 plants/ha. In 1988, pepper plants grown at the highest density (15-cm in-row spacing, 44,400 plant/ha) produced less fruit per plant but more fruit per hectare than those grown in lower densities. In 1989, yields with either a 15-cm in-row spacing in a single row or a 30-cm in-row spacing in double rows (both with 44,400 plants/ha) were higher than in the others. In general, less fruit were located in the lower part of the plant canopy when planted in higher plant population densities.

scholarly journals Performance of cotton genotype TCH 1819 to high density planting system under winter irrigated condition at the Western agroclimatic zone of Tamil Nadu

2021 ◽  
Vol 13 (SI) ◽  
pp. 130-134
Author(s):  
R. Sowmiya ◽  
N. Sakthivel
Keyword(s):  
Tamil Nadu ◽  
Plant Density ◽  
Unit Area ◽  
Maximum Yield ◽  
Winter Season ◽  
Plant Population ◽  
Growth And Yield ◽  
Row Spacing ◽  
Area Index ◽  
Cotton Genotype

Plant population is an important attribute in crop management practice. Increasing the plant density by decreasing the crop row spacing was an alternative strategy to optimize crop profit. Hence, the field trial was conducted at Tamil Nadu Agricultural University, Coimbatore, during the winter season of 2017 – 18 to study the effect of row spacing on the growth and yield of cotton genotype TCH 1819. The experimental design was Randomized Block Design (RBD) with seven spacing treatments viz., T1: 60 x 15 cm (1,11,111 plants ha-1), T2: 60 x 20 cm (83,333 plants ha-1), T3: 75 x 15 cm (88,888 plants ha-1), T4: 75 x 20 cm (66,666 plants ha-1), T5: 75 x 30 cm (44,444 plants ha-1), T6: 90 x 15 cm (74074 plants ha-1), T7: 90 x 20cm (55,555 plants ha-1) and was replicated thrice.  Plant densities showed a significant (p=0.05) difference for all the characters studied.  The higher plant density of 1,11,111 plants (60 x 15 cm) observed significantly (p=0.05) maximum plant height (103.14 cm), Leaf Area Index (LAI) (4.35), Dry Matter Production (DMP) (8125 kg/ha), Crop Growth Rate (CGR) (6.58 g/m2/day), root length (41.46 cm), root dry weight (14.94 g/plant), and chlorophyll index (48.24).  The number of sympodial branches per plant (17) and bolls per plant (22 bolls) was found significant in the wider spacing of 75 x 30 cm.  The narrow spacing of 60 x 15 cm noted the highest seed cotton yield (2565 kg/ha), net return (R65706.62), and B: C (2.32) ratio, followed by the spacing of 75 x 15 cm due to more plant density per unit area (m2).  So, maximum yield in cotton can be achieved by decreasing the row spacing and increasing the plant population per unit area.

scholarly journals PLANT SPACING AND NITROGEN INFLUENCE ON STRAWBERRY GROWTH AND FRUITING

HortScience ◽  
1990 ◽  
Vol 25 (4) ◽  
pp. 399c-399
Author(s):  
Elden J. Stang ◽  
Gavin G. Weis
Keyword(s):  
Plant Population ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Higher Plant ◽  
Plant Populations ◽  
Available N ◽  
Berry Size ◽  
Plant Densities ◽  
Nitrogen Treatments ◽  
Population Effects

`Raritan' and `Guardian' strawberry were grown in the matted row system with controlled plant densities of 1, 2, 3, 4 or 5 plants/0.09m2 for comparison to a non-thinned matted row averaging 9 plants/0.09m2. Nitrogen treatments were superimposed on plant spacings at 3 week intervals in preharvest and postharvest applications. Total seasonal available N was 0, 36, 54 and 76 kg/ha. Fruit yield per plant decreased as plant population increased. Berry size declined with increased plant population but number of fruit per plant was not influenced. For both cultivars, plant populations of 4 to 5 plants/0.09m2 resulted in maximum fruit yield. Number of branch crowns for all treatments was 2.5-3.5/plant in the second growing season. Branch crown numbers were reduced with higher plant populations. N effects were independent of plant population effects and did not compensate for lower yields at low plant populations in more or larger berries. Optimum water management may be more important than N fertilizer in determing strawberry plant growth and yield.

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