scholarly journals Seed Piece Spacing for Spring Chipping Potato Cultivars in Florida

HortScience ◽  
2017 ◽  
Vol 52 (2) ◽  
pp. 230-235
Author(s):  
Fernanda Souza Krupek ◽  
Christian T. Christensen ◽  
Charles E. Barrett ◽  
Lincoln Zotarelli
Keyword(s):  
Specific Gravity ◽  
Seed Piece ◽  
Production Cost ◽  
Block Design ◽  
Potato Cultivars ◽  
Row Spacing ◽  
Marketable Yield ◽  
Industry Standard ◽  
Significant Difference ◽  
Chipping Potato

The cost of seed accounts for nearly 10% of the estimated production cost of chipping potato (Solanum tuberosum) production in Florida. Optimizing seed piece spacing can reduce costs without affecting potato yield. This study evaluated the effects of seed piece spacing on yield, quality, and economic revenue of chipping potato production in north Florida. A field experiment was conduct during the spring of 2013, 2014, and 2016 in Hastings, FL, with a split-plot randomized complete block design. In-row seed piece spacings of 10, 15, 20 (industry standard), 25, and 30 cm were assigned as the main plot and S. tuberosum potato cultivars (Atlantic, Harley Blackwell, and Elkton) as the subplots. Marketable tuber yield ranged between 10.8 and 15.2 Mg·ha−1 in 2013, 10.1 and 12.8 Mg·ha−1 in 2014, and 9.9 and 19.7 Mg·ha−1 in 2016. Overall lower yields in 2013 were due to three freeze events early in the season. Widening seed piece spacing resulted in a linear decrease in total and marketable yield in 2013 and 2014. Conversely, seed piece spacings of 10 and 15 cm showed lower marketable yields in 2016. There was no interaction between in-row spacing and cultivar in any year tested. Cultivars performed variably across years for total and marketable yield and specific gravity. Tuber specific gravity was unaffected by seed piece spacing, except in 2013, when 25 and 30 cm resulted in slightly higher values. There was no significant difference in total and marketable yield between the industry standard seed piece spacing 20 and 25 cm in any year. In-row spacing of 25 cm in 2013 and 30 cm seed piece spacing in 2014 and 2016 provided the greatest economic return. Net revenue can be increased by adjusting the in-row seed piece spacing from the commercial standard of 20 to 25 cm, which reduces production cost without negatively impacting yields.

scholarly journals Effect of intra-row spacing on plant growth, yield and quality of tomato (Lycopersicon esculentum mill) varieties at mizan-aman, southwestern Ethiopia

2020 ◽  
Vol 8 (1) ◽  
pp. 33-42
Author(s):  
Ashenafi Abriham ◽  
Demelash Kefale
Keyword(s):  
Block Design ◽  
Fruit Shape ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Southern Ethiopia ◽  
Row Spacing ◽  
Marketable Yield ◽  
Early Maturity ◽  
Yield And Quality ◽  
Number Of Branches

The productivity of tomato is influenced mainly by environmental factors, agronomic practices and cultivar potential. Accordingly, a field experiment was conducted at Mizan-Aman, southern Ethiopia in  2016/ 2017 to evaluate the effect of intra-row spacing (20, 30, 40 and 50 cm) on the performance of three tomato varieties(Fetan, Bishola and Roma VF) with the constant inter-row spacing of 70 cm in completely randomized block design with three replications. Data on crop phenology, growth performance, yield and quality parameters were recorded and subjected to analysis of variance using SAS version-9 software. Results of the study indicated that both intra-row spacing and variety had a significant effect on phenology as well as parameters including; the number of branches, the number of fruit cluster and fruit per plant, fruit weight, total fruit yield, marketable and unmarketable yield and total soluble solids (TSS). However, the number of fruits per cluster, fruit shape index, titratable acidity (TA) and pH were significantly different only among varieties, while plant height was significantly affected by intra-row spacing. Closer spacing enhanced early maturity, while wider intra-row (50 cm) produced a maximum number of branches, cluster and fruits per plant, fruit weight, unmarketable yield and TSS. Generally, 20 and 30 cm intra-row spacing was found to be suitable for the production of maximum total and marketable yield. From the three tomato varieties, Fetan was early maturing with the highest total and marketable yield. The varieties were also significantly different in fruit weight, with the highest value obtained from Bishola followed by Fetan. The outcome of this study revealed that, the intra-row spacing of.30 cm and variety Fetan could be promoted for production in Mizan-Aman and similar agro-ecologies.

scholarly journals Evaluation of Potato Genotypes for Plant and YieldCharactersin Field at Dailekh

2021 ◽  
Vol 19 (2) ◽  
pp. 16-24
Author(s):  
Binod Prasad Luitel ◽  
Bishnu Bahadur Bhandari ◽  
Bihani Thapa
Keyword(s):  
Tuber Yield ◽  
Block Design ◽  
Research Station ◽  
Spring Season ◽  
Marketable Yield ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
The Mean ◽  
On Farm ◽  
Eye Depth

A field experiment was conducted at Horticulture Research Station (HRS), Dailekh, in Mid-Western hills of Nepal during 2019 and 2020, to evaluate the performance of ten potato genotypes for plant, and tuber yield characters. The potato genotypes were evaluated during spring season in a randomized complete block design with three replications. The genotypes showed highly significant difference for all the traits except tuber emergence. The mean squares for the year were also significant for all the traits except tuber emergence, stem numberplant -1 and total tuber yield. The interaction between genotypes and years did not show significant differences in all the traits except stem numberplant -1. Genotype CIP392797.22 produced more marketable yield (27.5 tha -1) and total tuber yield (30.2tha -1) than all other genotypes. The genotype CIP392797.22 is characterized as medium maturing, oval-shaped and dark red-skinned one with shallow eye depth in the tuber, and it imparted 13.2% higher marketable yield than Kufri Jyoti (24.3 tha -1). Thus, the genotype CIP392797.22 is recommended to evaluate on-farm for the verification and up-scaling among farmers at Mid-Western Nepal.

scholarly journals Effect of row spacing and seeding rate on baby corn production

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 2857-2872
Author(s):  
André Augusto Favaretto Lucianetti ◽  
◽  
Silvestre Bellettini ◽  
Keyword(s):  
Block Design ◽  
Shape Index ◽  
Planting Density ◽  
Row Spacing ◽  
Corn Yield ◽  
Seeding Rate ◽  
Marketable Yield ◽  
Corn Production ◽  
Randomized Block Design ◽  
Stalk Diameter

Baby corn is the female green ear of the corn plant harvested before fertilization and its cultivation is a profitable alternative for small farms. The objective of this study was to evaluate the effect of row spacing (0.5, 0.6, 0.7, 0.8 and 0.9 m) and seeding rate (13, 15, 17 plants per meter) on baby corn production. The study was conducted at State University of Northern Paraná, Luiz Meneghel Campus, southern Brazil with a 5 × 3 factorial scheme (spacing, density) arranged in a randomized block design with four replications. Corn hybrid AG1051 was grown in 5-m long and 6.5-m wide plots. The yield components evaluated were stalk diameter, length and diameter of the unhusked and husked ear, shape index, unhusked yield, husked yield, and marketable yield. Stalk diameter and ear size were significantly affected by row spacing. Ears were not perfectly cylindrical. Baby corn yield was not affected by either row spacing or planting density.

scholarly journals Corn (Zea mays L.) Response to Hybrid, Row Spacing, and Plant Populations in the Blacklands of Central Texas

2018 ◽  
Vol 8 ◽  
pp. 1214-1223 ◽  
Author(s):  
James Grichar
Keyword(s):  
Block Design ◽  
Field Studies ◽  
Growth And Yield ◽  
Yield Response ◽  
Row Spacing ◽  
Plant Populations ◽  
Corn Hybrids ◽  
Significant Difference ◽  
Central Texas ◽  
Ear Height

Field studies were conducted during the 2013 and 2014 growing seasons in central Texas near Taylor (30.5326o N; 97.4548o W) to determine the effect of hybrid, row spacing, and plant populations on corn growth and yield.  Two corn hybrids (BH 8844 and BH 8900) were compared at 53,000, 62,000, and 71,000 plants ha-1 planted one row on a single bed or twin rows (spaced approximately 20 cm apart) on a single bed. Plant counts were taken 4 to 6 wk after planting while ear height measurements were taken approximately four wk prior to corn harvest. Crop yield was determined by harvesting all eight rows of each plot with a combine. Weights were adjusted to 12% moisture. Experimental design was a factorial arrangement using a randomized complete block design with corn hybrid (2), row spacing (2), and seeding rates (3) as factors.  Data were analyzed using PROC GLM with SAS (SAS Institute, Inc., Cary, NC) and treatment means separated by Fisher's protected least significant difference test at P = 0.05.  Plant height was not affected by plant populations or row spacing as only hybrid response was significant with BH 8900 being taller in both years. Row spacing affected ear height in one of two years with the twin row spacing having a taller ear placement in the dryer year. No differences were seen with ear placement with respect to plant populations. In the dry year, yield of BH 8844 decreased as plant populations increased; however, no differences were noted with BH 8900.  In the wet year, the inverse was seen with increased yield with higher populations with both hybrids. The twin row system increased BH 8900 yield in 2013. In 2014, with BH 8844, the single row system outyielded twin row and no differences noted with BH 8900.  The results were quite variable and this was due in part to rainfall events in the two years.  Plant and ear height was influenced by hybrid while yield response was somewhat affected by population and row spacing.  A hybrid x row width response was noted indicating that certain hybrids will respond to row spacing more than others.

The effect of in-row seed piece spacing and harvest date of the tuber yield and processing quality of Conestoga potatoes in southern Manitoba

1991 ◽  
Vol 71 (1) ◽  
pp. 289-296 ◽  
Author(s):  
Brian L. Rex
Keyword(s):  
Specific Gravity ◽  
Seed Piece ◽  
Tuber Yield ◽  
Hollow Heart ◽  
Chip Color ◽  
Harvest Date ◽  
Processing Quality ◽  
Marketable Yield ◽  
Chip Processing ◽  
Large Tuber

Conestoga was registered in Canada in 1982. It has been readily accepted by chip producers and processors in Manitoba, although little information on the effect of commercial production practices on the yield and processing quality under Manitoba conditions is available. In this study, the effect of within-row seed piece spacing at three harvest dates on Conestoga potatoes for the early-season chip processing market was evaluated under rainfed conditions in southern Manitoba in 1982, 1983 and 1986. Treatments consisted of spacings of 22, 30, 38 and 46 cm between seed pieces within the row, with 1 m between row centers, harvested at 10-d intervals starting at 75 ± 5 d after planting (DAP) each year. As spacing between seed pieces increased, total, small and maingrade tuber yield and number, and specific gravity decreased. Large tuber yield and number increased. The number of mainstems per plant, the incidence of hollow heart and chip color were unaffected. Delaying harvest resulted in an increased yield of total and maingrade tubers, and higher specific gravity. The highest marketable yield (maingrade plus large tubers) resulted from the 22-cm in-row spacing. The total number of tubers harvested and the number of maingrade tubers increased between 75 and 85 DAP, but did not increase substantially after 85 DAP. Chip color and the incidence of hollow heart were not significantly affected by harvest date. Key words: Potato, population, spacing, harvest date, hollow heart, chip color

The Combined Effects of Salinity and Water Stress on the Growth and Yield Quality of Tomato

2013 ◽  
Vol 295-298 ◽  
pp. 2265-2273 ◽  
Author(s):  
Xiang Ping Guo ◽  
Murava Raphinos Tackmore ◽  
Kargbo Obai ◽  
Mohamed Khaled Salahou
Keyword(s):  
Salt Stress ◽  
Water Stress ◽  
Growth Parameters ◽  
Block Design ◽  
Field Capacity ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Significant Difference ◽  
Stress Levels ◽  
Yield Quality

The effects of two soil salinities (1g/kg and 6g/kg) and two water stress levels (60% and 80% of the field capacity) on growth and yield parameters of Meiguo903 tomato were investigated under greenhouse conditions. A randomized complete block design experiment with three treatments and four replications was conducted. The treatments were defined as: CK (no water stress and no salt stress), T1 (no water stress but salt stress) and T2 (water stress and salt stress). The results show that more water was applied in CK than the other treatments, but T2 saved water by about 10%. Measured growth parameters showed that water stress and salinity affected the height and stem diameter of the plants. In general, T2 had short plants with thin stems, T1 had a little taller and thin stems while CK had tall plants with thick stems. It was found that both salinity and water stress has a significant effect on total marketable yield. T1 reduced the yield by 37% while T2 conditions reduced the yield by about 43%. Comparing T1 and T2 which were subjected to the same saline conditions (but different water stress levels), there is a significant difference on the amount of water used, where T1 is the highest, but there is no significant difference on their yield. These results give the conclusion that, in a saline environment, water stress can save water and produce a yield close to that when full irrigation is applied. Nearly optimum yields can be achieved by proper water stress management in such an environment.

scholarly journals Effects of Seed Rate and Row Spacing on Yield and Yield Components of Teff (Eragrostis tef [Zucc.] Trotter.) in Kiltu Kara Distirct of Western Ethiopia

2020 ◽  
pp. 8-23
Author(s):  
Shifera Kitata ◽  
Tolera Abera ◽  
Bhupesh Nandeshwar
Keyword(s):  
Yield Components ◽  
Block Design ◽  
Eragrostis Tef ◽  
Row Spacing ◽  
Mean Values ◽  
Seed Rate ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Four Levels

Teff is a major staple cereal crop in Ethiopia. However, its productivity is limited due to lack of appropriate sowing methods and utilization of improper seed rate are among the major once. Hence, a field experiment was conducted in Kiltu Kara District to determine the effects of seed rate and row spacing on yield and yield components of teff. Four levels of seed rates (10, 15, 20 and 25 kg ha-1) and three rows spacing (15, 20 and 25cm) used and combined 12 treatments in total. The experiment was laid out as a randomized complete block design with a factorial arrangement in three replications. All yield components teff were significantly affected by different row spacing except straw yields of teff. The interaction of seed rate and row spacing showed significant difference for yield and yield components of teff. Significantly higher mean values of teff were found by the interaction of 10 kg seed rate ha-1 and 25 cm row spacing. Significantly higher panicle length (36.9), number of tillers per plant (5), number of productive tillers per plant (4) of teff was recorded from interaction of 10 kg seed rate ha-1 and 25 cm row spacing. Higher dry biomass (2591 kg ha-1) and grain yields (1267 kg ha-1) of teff were recorded from interaction of 10 kg seed rate ha-1 and 25 cm row spacing. Mean of highest harvest index (49%) of teff was recorded from interaction of 10 kg seed rate ha-1 and 25cm row spacing as compared to others. Significantly higher straw yields (1488 kg ha-1) was recorded from interaction of 15kg seed rate ha-1 and 20 cm row spacing as compared to other treatment combinations. Therefore, the use of 10 kg seed rate ha-1 together with 25 cm row spacing was the optimum seed rate and row spacing and 10 kg ha-1 was profitable for the production of teff. To make definite conclusion further research for more seasons and location is required to give recommendation for the study area.

scholarly journals Bulb Quality and Storability of Onion (Allium cepa L.) as Affected by Varieties and Intra-Row Spacing in Antsokia Gemza, Ethiopia

2020 ◽  
Vol 8 (3) ◽  
pp. 580
Author(s):  
Birtukan Asmirew ◽  
Yohannes Gedamu ◽  
Asrat Ayalew
Keyword(s):  
Weight Loss ◽  
Pearson Correlation ◽  
Block Design ◽  
Computer Software ◽  
Quality Parameters ◽  
Matter Content ◽  
Row Spacing ◽  
Dry Matter Content ◽  
Significant Difference ◽  
Four Levels

This experiment was conducted in Antsokia Gemza district, Ethiopia in 2017/18 to evaluate the effect of intra-row spacing on bulb quality and storability of onion varieties. A 4×4 factorial experiment with four different varieties (Adama Red, Bombay Red, Melkam and Shendi) and four levels of intra-row spacing (5.00, 7.50, 10.00 and 12.50 cm) was laid on randomized complete block design with three replications. Data were collected on bulb quality attributes and storability and subjected to Analysis of Variance (ANOVA) using statistical analysis system (SAS) computer software 9.1. The mean separation test was done by list significant difference (LSD) test at 5% probability level. Simple linear correlation analyses between and among the different parameters were made using Pearson Correlation Coefficient. Accordingly, most of the parameters were significantly affected by intra-row spacing and variety. Variety Melkam exhibited the highest bulb diameter, bulb length, bulb dry matter content and bulb fresh weight. Melkam and Adama Red were with the lowest weight loss in storage while Bombay Red and Shendi scored the highest weight loss in storage. Most of the bulb quality parameters were significantly highest at the widest intra-row spacing of 10.00 and 12.50 cm. However, there was no significant variation between 7.50 and 10.00 cm intra-row spacing on average bulb weight which is considered as the most important bulb quality parameter for the producers from the market point of view. Weight loss was higher at the widest intra-row spacing for all varieties. Based on the findings of this study, it can be concluded that the bulb quality and storability of onion in Antsokia Gemza district can be optimized through cultivating variety Melkam at intra-row spacing of 7.5 cm.

Effects of planting configuration and row spacing on growth and production of potato under mulched condition in Dadeldhura, Nepal

2019 ◽  
Vol 2 (1) ◽  
pp. 282-300
Author(s):  
Roshan Dhakal ◽  
Binod Joshi ◽  
Santosh Bharati ◽  
Shiva Chandra Dhakal ◽  
Khem Raj Joshi
Keyword(s):  
Leaf Area ◽  
Growth Parameters ◽  
Block Design ◽  
Tuber Number ◽  
Row Spacing ◽  
Index Number ◽  
Double Row ◽  
Area Index ◽  
Weight Growth ◽  
Significant Difference

An experiment was conducted at the research site of Dadeldhura, Nepal in 2019 to identify optimum plant spacing for potato under mulched condition. Three levels of inter row spacing; 60 cm with single row per bed (1RB), 45 cm with double row per bed (2RB) and 30 cm with triple row per bed (3RB) and intra row spacing (20, 30 and 40 cm) were laid out in factorial randomized complete block design with three replications. Results showed that there was significant difference (p<0.05) for all parameters except on days to 50% germination, 90% flowering, 50% maturity and on main stem number and graded large sized tuber number and it's weight. Growth parameters namely canopy, leaf number and leaf area were significantly higher (p<0.05) in 60 cm (1RB) ×30 cm spacing. Plant height and leaf area index was significantly higher (p<0.05) in 60 cm (1RB) × 20 cm and 30(3RB) ×20 cm spacing respectively. Total number of tubers m-2 , weight of tubers  m-2, weight of marketable tubers m-2, harvest index, number of small sized tuber m-2 ,weight of small sized tubers m-2 and weight of medium sized tubers m-2 were found to be 56.24%,39.79%, 47.98%,4.41%,90.56%, 113.23% and 70.15% significantly higher (p<0.05)  in 30 cm (3RB) compared to 60 cm on (1RB) inter row spacing respectively and 59.72%, 61.15%, 58.30%, 4.41%, 114.90%, 137.31%, 55.39% higher in 20cm compared to 40 cm intra row spacing. Interaction effect was significant (p<0.05)  in marketable tuber number and medium sized tuber number in which the average highest number of marketable tubers (134.44) and medium sized tubers (121.08) was found in 30(3RB) ×20 cm spacing which was 165.95% and 235.03% significantly higher compared to  60×40 cm spacing respectively. So, this study showed that 30(3RB) ×20 cm spacing would be best spacing combination under mulched condition.

Influence of Nitrogen Fertilization on Pecan Nut Quality and Yield

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 549b-549 ◽  
Author(s):  
Laurence Sistrunk ◽  
J. Benton Storey
Keyword(s):  
Nitrogen Fertilization ◽  
Block Design ◽  
Alternate Bearing ◽  
Marketable Yield ◽  
Trunk Diameter ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Standard Rate ◽  
Growth And Change ◽  
Terminal Shoot

The influence of various nitrogen fertilization rates on the marketable yield and nut quality of 12-year-old grafted `Desirable', `Pawnee', and `Stuart' pecans in east Texas was investigated. Pecans are alternate-bearing, and this test was conducted during a high-yielding season. Terminal shoot growth and change in trunk diameter was measured to determine tree response to nitrogen rates. A standard rate of 44 kg N/ha was applied in March, April, and May to the control trees as NH4NO3. A second treatment used 112 kg N/ha in March and the standard rates the next two applications. A third treatment used 112 kg N/ha in March and April and the standard rate in May. The fourth treatment used 112 kg N/ha in all three applications. The treatments were arranged in a randomized block design. Nut yields were generally higher with the increase in nitrogen for all cultivars with the exception of `Stuart', which showed the least change. Highest yield, terminal and trunk diameter growth, and nut quality was obtained with the 336 kg N/ha rate. Some differences in percent kernel, marketable yield and nut size were measured with the three cultivars. Our data indicates that during a high-yielding crop load on young trees, nitrogen fertilization can make a significant difference in yield.

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