COMPARISON OF BAND AND BROADCAST APPLICATIONS OF PHOSPHORUS ON SWEET CORN YIELD

In 1994 and 1995, a study was conducted in Crossville, Ala., to determine if differences in leaf P concentration and crop yield occurred when P was broadcast or band-applied. Phosphorus (0, 34, 67, 101, and 134 kg P/ha) was banded (2 × 2) or broadcast and incorporated before planting. Other nutrients were applied based on current recommendations and soil testing. In 1994, as level of P increased from 0 to 150 kg P/ha, fresh weight of harvested ears increased quadratically. In 1995, fresh weight of harvested ears did not differ among broadcast treatments; however, there was a linear increase in yield among banded P treatments. There was no difference in fresh weight of harvested ears between banding and broadcasting in either year. Percent P in corn ear leaves did not differ among treatments. There was no difference in P leaf concentrations between the banded and broadcast treatments, indicating that yield response occurred because of rate of P application as opposed to method.

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EFFECT OF RATE OF BANDED PHOSPHORUS ON SWEET CORN YIELD

HortScience ◽

10.21273/hortsci.30.3.436g ◽

1995 ◽

Vol 30 (3) ◽

pp. 436g-436

Author(s):

Joseph M. Kemble ◽

Elizabeth A. Guertal

Keyword(s):

Crop Yield ◽

Sweet Corn ◽

Soil Testing ◽

Corn Yield ◽

Fresh Weight ◽

P Concentration ◽

P Application ◽

Leaf P

In 1994, a study was conducted in Crossville, Ala., to determine if differences in leaf P concentration and crop yield occurred when P was applied as either a broadcast or banded treatment. Phosphorus (0, 34, 67, 101, and 134 kg·ha–1) was banded (2 × 2) or broadcast applied and incorporated before planting. Other nutrients were applied based on current recommendations and soil testing. As level of P increased from 0 to 134 kg·ha–1, fresh weight of harvested ears increased quadratically. There was no difference in fresh weight of harvested ears between banding and broadcasting. Yields were not maximized within the range of applied P, although it seems that yield reaches a plateau near the highest rate of applied P. Percent of P in corn ear leaves did not differ among treatments. There was no difference in P leaf concentrations between the banded and broadcast treatments, indicating that response in yield occurred due to rate of P application, not method.

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TWO PRUNE-YEAR APPLICATIONS OF PHOSPHORIC ACID INCREASE PHOSPHORUS UPTAKE BY LOWBUSH BLUEBERRIES.

HortScience ◽

10.21273/hortsci.27.6.612c ◽

1992 ◽

Vol 27 (6) ◽

pp. 612c-612

Author(s):

John M. Smagula

Keyword(s):

Phosphoric Acid ◽

Phosphorus Uptake ◽

Linear Increase ◽

Phosphorus Concentration ◽

P Fertilizer ◽

P Application ◽

Carry Over ◽

Leaf P ◽

Carry Over Effect

Liquid phosphorus (23% phosphoric acid) was applied preemergence at 0, 22.4, 44.8, 67.2, or 89.6 kg·ha-1 to 9 fields: 3 commercial blueberry fields having plants with very low (<.111%), 3 low (.111-.125%), and 3 adequate (>.125%) leaf phosphorus concentrations. Years of application ('89,'89+'91,'89 + '91 + '93) were assigned in a split-block RCB design with 4 replications at each location. A linear increase in leaf phosphorus concentration with increasing rates of P application was found in both 1989 and 1991. Differences in response were found among locations. A second application in 1991 was effective in raising leaf P levels at most locations to higher levels than the application in 1989. Also, there were higher levels of leaf P in treatment plots that only received P fertilizer in 1989 compared to controls, indicating a carry over effect.

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Common Smut Reduces Sweet Corn Yield and Ear Processing Quality

HortScience ◽

10.21273/hortsci.46.11.1507 ◽

2011 ◽

Vol 46 (11) ◽

pp. 1507-1511 ◽

Cited By ~ 2

Author(s):

George H. Clough ◽

Sarah Blatchford ◽

Philip B. Hamm

Keyword(s):

Sweet Corn ◽

Natural Infection ◽

Ustilago Maydis ◽

Quality Characteristics ◽

Corn Yield ◽

Fresh Weight ◽

Planting Dates ◽

Harvest Maturity ◽

The Impact ◽

Spring Planting

The impact of natural infection of Ustilago maydis (causal agent of common smut) on processing characteristics of three F1 hybrid sweet corn (Zea mays L.) cultivars was evaluated in a 2-year study with early and late spring planting dates. At harvest maturity, size and location of galls were recorded and quality characteristics measured. Galls on the lower stalk, upper stalk, and tassel reduced fresh weight and diameter of husked ears, whereas galls on the base of the stalk reduced fresh weight only. Ear length was reduced by galls on the upper stalk. As gall size increased from 0 to greater than 10.2 cm in diameter, ear fresh weight and diameter decreased. The presence of galls greater than 10.2 cm in diameter reduced ear length. Kernel depth was unaffected by size or location of gall. Additional ears of the same three cultivars were sampled from commercial fields planted in midseason near Walla Walla and Patterson, WA. Galls located on the upper and lower stalk reduced fresh weight, length, and diameter, whereas galls on the base of the stalk reduced fresh weight only. As gall size increased, fresh weight, length, diameter, and kernel depth decreased.

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Respon Hasil Jagung Manis Terhadap Takaran Pupuk Fosfat pada Andisol Lembang

Paspalum: Jurnal Ilmiah Pertanian ◽

10.35138/paspalum.v1i2.79 ◽

2018 ◽

Vol 1 (2) ◽

pp. 13

Author(s):

Endang Sufiadi

Keyword(s):

Sweet Corn ◽

Block Design ◽

Maximum Yield ◽

Phosphate Fertilizer ◽

Yield Response ◽

Corn Yield ◽

West Java ◽

Potential Yield ◽

Randomized Block Design ◽

Fertilizer Rates

An experiment was conducted at experimental field of BBHAT, Cikole Lembang, West Java District, West Java, on elevation of 1.250 m above sea level, from July to October 2008. The objective of this experiment was to study the Yield Response of Sweet Corn on the Phosphate Fertilizer Rates in Lembang Andisol. The design used was a Randomized Block Design with five treatments and five replication of A = without phosphate fertilizer, B=75 kg ha-1 P2O5, C= 150 kg ha-1 P2O5, D=225 kgha-1 P=O5, E=300 kg ha-1 P2O5. The result of experiment showed that yield response of sweet corn on the phosphate rate in Lembang Andisol is quadratic form. Maximum yield of corn cob with husk per plant of 575,24 grams per plant was obtained at the optimum phosphate rate of 190,7 kg ha-1 P2O5. This corn yield is equivalent to 22 tons ha-1 higher than the potential yield of these sweet corn variety. Soil-available P increased with increasing rates of phosphate fertilizer, reaches a very high criteria.

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The phosphorus requirement of lettuce

The Journal of Agricultural Science ◽

10.1017/s0021859600057129 ◽

1973 ◽

Vol 80 (1) ◽

pp. 111-117 ◽

Cited By ~ 8

Author(s):

R. Smith ◽

M. A. Scaife

Keyword(s):

Adsorption Isotherm ◽

Sandy Soil ◽

Maximum Growth ◽

P Adsorption ◽

P Concentration ◽

Phosphorus Requirement ◽

Optimal Intensity ◽

P Application ◽

Leaf P ◽

P Supply

SummaryThe optimal intensity of P supply for lettuce was investigated in a pot experiment with five soils, six levels of P application (0, 15, 30, 60, 120, 240 ppm) and three times of harvest (2, 3 and 4 weeks after emergence). The P adsorption isotherm for each soil was measured in 0.01 M CaCl2.All soils responded strongly to P application, the amounts required for maximum growth varying from 120 ppm on a sandy soil to 300 ppm on a moss peat. The differences in requirement were related to the P adsorption by the soil, and on all soils a solution P concentration of about 1 ppm resulted in maximum growth.The Optimal leaf P concentration in young lettuce was about 0·6%.

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Annual weed competitiveness as affected by preemergence herbicide in corn

Weed Science ◽

10.1614/ws-05-156r1.1 ◽

2006 ◽

Vol 54 (1) ◽

pp. 156-165 ◽

Cited By ~ 11

Author(s):

Konanani B. Liphadzi ◽

J. Anita Dille

Keyword(s):

Seed Production ◽

Crop Yield ◽

Field Experiments ◽

Yield Loss ◽

Palmer Amaranth ◽

Growth And Yield ◽

Yield Response ◽

Corn Yield ◽

Herbicide Application ◽

Crop Yield Loss

Competitiveness of weeds that survive a PRE herbicide application (escaped weeds) might be altered because of herbicide injury. As a result, potential crop yield loss may be reduced. Field experiments were conducted at Ashland Bottoms, KS, in 2001 and 2002 and at Rossville, KS, in 2002. The objectives were to quantify corn growth and yield response to Palmer amaranth or velvetleaf competition, with or without isoxaflutole (0.03 kg ha−1) or flumetsulam (0.04 kg ha−1) application, and to determine seed production of Palmer amaranth or velvetleaf as affected by PRE herbicide. Palmer amaranth and velvetleaf densities ranged from 0 to 6 and 0 to 32 plants m−1of corn row, respectively. At Ashland Bottoms in 2002, corn height at tasseling decreased with increasing Palmer amaranth (1.58 cm weed−1m−1) and velvetleaf (1.32 cm weed−1m−1) density when no herbicide was applied. With flumetsulam application, each increase in velvetleaf density reduced corn height by 0.4 cm. Escaped Palmer amaranth and velvetleaf were shorter than untreated plants at corn tasseling. At Rossville in 2002, Palmer amaranth that escaped isoxaflutole or flumetsulam application caused 13% corn yield loss (YL) at a density of 3 plants m−1. In contrast, corn YL from untreated Palmer amaranth at the same density was 30%. At Ashland Bottoms in 2002, velvetleaf that escaped flumetsulam caused 3% corn YL at a density of 3 plants m−1compared with 38% YL caused by untreated velvetleaf at the same density. Seed production of Palmer amaranth was independent of density or herbicide treatment, whereas production of velvetleaf seed increased with density, with or without flumetsulam. The study showed that corn YL from both Palmer amaranth and velvetleaf that escaped a PRE herbicide was less than from untreated weeds, but seed production by escaped weeds was similar to that of untreated weeds.

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Response of Young Olive Plants (Olea europaea) to Phosphorus Application

HortScience ◽

10.21273/hortsci11032-16 ◽

2016 ◽

Vol 51 (9) ◽

pp. 1167-1170 ◽

Cited By ~ 7

Author(s):

María José Jiménez-Moreno ◽

Ricardo Fernández-Escobar

Keyword(s):

Shoot Growth ◽

Phosphorus Uptake ◽

P Uptake ◽

Zn Deficiency ◽

P Deficiency ◽

P Concentration ◽

Quadratic Response ◽

P Application ◽

Phosphorus Application ◽

Leaf P

Mist-rooted ‘Picual’ olive cuttings growing in 1.1-L pots containing a mixture of washed sand and perlite were used to induce symptoms of phosphorus (P) deficiency and toxicity and to determine the nutritional status to which these symptoms occur. Plants were growing in a growth chamber at 25 °C day/15 °C night with a 14-hour photoperiod. From late spring to the autumn, plants were placed in a shade house protected from the rain. In the first experiment, plants received the application of 0, 100, 200, or 400 ppm P, and in the second experiment, 0, 12.5, 25, 50, 100, or 200 ppm P. Shoot growth was measured weekly and leaf samples were collected at different dates to determine P concentration. At the end of each experiment, plants were harvested and P was determined to obtain the P uptake by the plants. Phosphorus uptake efficiency (PUE) was estimated as PUE = (P uptake/P applied) × 100. P content increased in plants with the amount of P applied, and accumulated mainly in the roots. Vegetative growth showed a quadratic response, indicating a reduction of growth at the lowers and highest doses of P application. Leaf P concentration below or above which shoot growth was reduced was 0.11% to 0.13%. Symptoms of P deficiency and toxicity were observed in only a few plants. Leaf P concentration of deficient plants was 0.025%, and that of toxicity 0.21%. Toxicity symptoms were similar to that of zinc (Zn) deficiency. PUE was very low, 1.34% to 4.45%, suggesting the low P requirements of the olive.

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124 VEGETABLE CROP RESPONSE TO SOIL COMPACTION

HortScience ◽

10.21273/hortsci.29.5.446b ◽

1994 ◽

Vol 29 (5) ◽

pp. 446b-446

Author(s):

David W. Wolfe

Keyword(s):

Sweet Corn ◽

Plant Biomass ◽

Soil Layer ◽

Nutrient Status ◽

Growth And Yield ◽

Yield Response ◽

Corn Yield ◽

Snap Bean ◽

Compacted Soil ◽

Direct Seeded

Field studies conducted in 1993 on an Eel loam soil compared the growth and yield response of direct-seeded cabbage, cucumber, snap bean, and sweet corn, and transplanted cabbage, to a compacted soil layer (>2.5 MPa penetrometer resistance) at the 15 - 30 cm depth. Direct-seeded cabbage and snap bean were most severely affected by compaction, with 50% yield losses, and much smaller cabbage head size in compacted plots. Transplanted cabbage had a 30% lower yield in compacted compared to uncompactcd plots. Early vegetative growth of cucumber was less stunted by compaction compared to snap bean and cabbage, but compaction nevertheless resulted in a 50% reduction in total cucumber yield. Compaction delayed maturity and reduced early yield of cabbage, snap bean, and cucumber. Sweet corn yield was reduced by only 10% when grown on compacted soil, and there was no delay in maturity. Sweet corn responded more negatively to compaction in a 1992 field experiment, Greenhouse studies found a reduction in total plant biomass at 21 days after planting of 30%, 14%, 1%. and 3% for snap bean, cabbage, cucumber, and sweet corn, respectively, in pots compacted at the 10 cm depth. Sweet corn had a significantly higher proportion of root biomass in the compacted zone compared to the other crops. For all species, the growth reductions could not be attributed to reductions in leaf turgor, photosynthetic rate per unit leaf area or leaf nutrient status.

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INFLUENCE OF NITROGEN APPLICATION TIME AND PHOSPHORUS RATE ON PECAN

HortScience ◽

10.21273/hortsci.26.5.496g ◽

1991 ◽

Vol 26 (5) ◽

pp. 496g-496

Author(s):

Michael W. Smith

Keyword(s):

Total Yield ◽

Application Time ◽

N Application ◽

Soil P ◽

P Concentration ◽

Leaf N Concentration ◽

P Application ◽

Phosphorus Application ◽

Leaf P ◽

Plot Design

Thirty-five-year-old `Hayes' and `Patrick' trees (22 trees/ha) were fertilized with 112 kg N/ha (NH4NO3) either the second week of March or the first week of Oct each year. Phosphorus was applied (broadcast) during March 1986 and again during May 1989 at 0 or 244 kg P/ha. Treatments were arranged in a split-split-plot design with four single-tree replications. Leaf N concentration and the number of shoots/1-year-old shoot were not affected by N application time, and the effect on shoot length was inconsistent. Total yield and annual yield three of five years were greatest from `Hayes' when N was applied during Oct rather than March. Yield of `Patrick' was unaffected by time of N application. Phosphorus application increased soil P up to 20 cm deep, and leaf P concentration was increased three of five years in `Hayes' and two of five years in `Patrick'. Shoot growth, number of new shoots, nut size, kernel percentage, and yield were generally not affected by P application.

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Time of Nitrogen Application and Phosphorus Effects on Growth, Yield, and Fruit Quality of Pecan

HortScience ◽

10.21273/hortsci.30.3.532 ◽

1995 ◽

Vol 30 (3) ◽

pp. 532-534 ◽

Cited By ~ 5

Author(s):

Michael W. Smith ◽

Becky Cheary ◽

Becky Carroll

Keyword(s):

Shoot Growth ◽

Growth Yield ◽

Application Time ◽

Cumulative Yield ◽

N Application ◽

P Concentration ◽

P Application ◽

Phosphorus Application ◽

Leaf P

March vs. October N applications in factorial combination with two P rates were evaluated on two pecan [Carya illinoinensis (Wangenh.) C. Koch] cultivars. Leaf N concentrations were not affected by N application time. However, yield of `Hayes' was increased during 4 of 7 years and cumulative yield was increased 37% when N was applied during October compared to March. Yield of `Patrick' and individual nut weight and kernel percentage of `Hayes' and `Patrick' were not affected by N application time. Phosphorus application increased leaf P concentration 5 of 7 years during the study. Shoot growth, yield, individual nut weight, and kernel percentage were not affected by P application.

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