scholarly journals Effects of Planting Date on the Growth and Yield of Two Potato Cultivars Grown from Microtubersand Conventional Seed Tubers

2005 ◽  
Vol 8 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Jackson Kawakami ◽  
Kazuto Iwama ◽  
Yutaka Jitsuyama
Keyword(s):  
Planting Date ◽  
Potato Cultivars ◽  
Growth And Yield ◽  
Seed Tubers

scholarly journals Differential growth and yield responses of local potato cultivars from basic seed tubers

2021 ◽  
Vol 39 (3) ◽  
pp. 272-278
Author(s):  
Mónica Eliana Córdoba-Figueroa ◽  
Hernando Criollo-Escobar ◽  
Sandra Insuasty-Córdoba ◽  
Julián Fernando Mateus-Rodríguez
Keyword(s):  
Leaf Area ◽  
Growth Models ◽  
Block Design ◽  
Potato Cultivars ◽  
Growth And Yield ◽  
Growth Responses ◽  
Differential Growth ◽  
Area Index ◽  
Seed Tubers ◽  
Potato Growth

ABSTRACT Potato quality of seed tubers is a determinant factor that allows obtaining high yields, and its use must be a priority for a country or a producing region. Lack of information about how local cultivars perform differentially according to the environment has been identified in order to support potential seeds production programs. The research was carried out in 2018 at the Obonuco Research Center of Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), with the aim of analyzing the growth and yield of basic tuber seeds of five potato (Solanum tuberosum spp. andigena) cultivars. 1,080 seed tubers from each cultivar (treatments) were planted in a completely randomized block design and three replications. Mean comparison Tukey-Kramer (p≤0.05) test was performed for the yield analysis. From emergency to final harvest, destructive sampling was carried out every fifteen days in order to calculate dry matter and leaf area and establish growth models based on the accumulated degree-days (DD). The yield and proportion of seed tubers per plant were determined according to local resolution for seed certification in Colombia. Growth variables fitted better with the Hoerl, Gaussian, and third-degree polynomial models. The leaf area index of the potato cultivars reached the maximum value at 876 DD, with values ranging from 2.91 to 6.11 DD. The highest yield per plant was obtained by the Ica Única cultivar (2.73 kg plant-1). However, this cultivar showed the lowest percentage of seed tubers, with 50.59% compared to the others, which ranged between 80.82 and 87.40%. Differential potato growth responses through models based on the DD would explain the differences in final yield and seeds tuber production.

EFFECTS OF TEMPERATURE AND SEED TUBER BUD POSITION ON SHOOT EMERGENCE OF THE POTATO CULTIVARS JEMSEG AND CONESTOGA

1987 ◽  
Vol 67 (2) ◽  
pp. 599-603 ◽  
Author(s):  
A. W. McKEOWN
Keyword(s):  
Seed Tuber ◽  
Potato Cultivars ◽  
Seed Tubers ◽  
Solatium Tuberosum ◽  
Delayed Emergence ◽  
Early Maturing ◽  
Basal Portion ◽  
Bud Position ◽  
Effects Of Temperature ◽  
Cut Seed

Shoots of the early-maturing potato (Solatium tuberosum L.) cultivar Jemseg often do not emerge uniformly when cut seed pieces are planted in cold soil. Under controlled temperatures of 10, 15 and 20 °C, shoots from whole tubers and basal portions of Jemseg tubers emerged later than those from apical portions of seed tubers. The delayed emergence of the basal portion was most pronounced at low temperatures and ranged from 5 to 17 d. Emergence from basal vs. apical portions of Conestoga was delayed by 10 d at 10 °C and by 4 d at 15 °C, only when seed tubers with a single dominant apical sprout were used. There was no delay at 20 °C. The variable time to emergence of shoots in the field can be explained by delayed emergence from basal buds on cut seed pieces.Key words: Potato, cultivars, emergence, bud position, temperature, seed tuber

scholarly journals Effect of Planting Date and Gibberellic Acid on the Growth and Yield of Garlic

2010 ◽  
pp. 132-140 ◽  
Author(s):  
MA Islam ◽  
MH Reza ◽  
SMAHM Kamal ◽  
MA Wazed ◽  
KM Islam
Keyword(s):  
Gibberellic Acid ◽  
Plant Height ◽  
Dry Matter ◽  
Dry Weight ◽  
Planting Date ◽  
Growth And Yield ◽  
Planting Time ◽  
Local Cultivar ◽  
Number Of Leaves ◽  
Bulb Yield

An experiment was conducted with a local cultivar of garlic to study the effects of planting date and gibberellic acid on the growth and yield of garlic at the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh during November 2001 to April 2002. Early planting influenced the plant height, leaf number, bulb diameter and total dry matter. With the delay in planting time starting from November 7, the yield was chronologically reduced in later plantings. Significantly the highest bulb yield (2.67 t/ha) was recorded when planting was done on November 7 and lowest yield (0.92 t/ha) was obtained from December 22 planted crop. Bulb yield was higher in control plants than those of GA3 treated plants. The interaction effects of planting date and different concentrations of GA3 differed significantly in respect of plant height, number of leaves, bulb diameter and dry weight of roots, leaves and bulbs and yield of garlic.

Crop management: principles and practices.

2021 ◽  
pp. 89-123
Author(s):  
Dennis B. Egli
Keyword(s):  
Crop Yield ◽  
Management Practices ◽  
Seed Quality ◽  
Production Systems ◽  
Crop Management ◽  
Planting Date ◽  
Growth And Yield ◽  
Management Options ◽  
Physiological Processes ◽  
Variety Selection

Abstract This chapter discusses planting-seed quality, variety selection, plant population, planting date and row spacing. The goal of crop management is to create the perfect environment for the growth of the crop, where the perfect environment is characterized by the absence of stress or other factors that reduce crop growth and yield. This goal may be impossible or uneconomical to achieve, but that does not detract from its usefulness as a goal. The management practices discussed in this chapter are fundamental components of grain production systems that contribute to reaching the goal of the perfect environment. There are many management options available to an individual producer; selecting the best combination is not always easy and it may be constrained by factors outside the realm of the physiological processes controlling crop yield.

Effects of Planting Date and Gibberellic Acid on the Growth and Yield of Garlic (Allium sativum L.)

2004 ◽  
Vol 3 (3) ◽  
pp. 344-352 ◽  
Author(s):  
Md. Shahidur R ◽  
Md. Aminul Islam . ◽  
Md. Shahidul Haque . ◽  
Md. Abdul Karim .
Keyword(s):  
Gibberellic Acid ◽  
Allium Sativum ◽  
Planting Date ◽  
Growth And Yield

RESPONSE OF PEAS TO ENVIRONMENT: I. PLANTING DATE AND LOCATION

1966 ◽  
Vol 46 (1) ◽  
pp. 77-85 ◽  
Author(s):  
H. F. Fletcher ◽  
A. R. Maurer ◽  
D. P. Ormrod ◽  
B. Stanfield
Keyword(s):  
Dry Matter ◽  
Planting Date ◽  
Growth Characteristics ◽  
Growth And Yield ◽  
Maximum Temperature ◽  
Dry Matter Yield ◽  
Dark Skin ◽  
Planting Dates ◽  
The Mean ◽  
Maximum Temperatures

The effect of 15 planting dates on various growth characteristics of peas var. Dark Skin Perfection was studied in outdoor pot experiments at Vancouver and Agassiz, B.C. Differences in growth and yield between locations and planting dates were partly accounted for by the mean of maximum temperatures for the growth period.At Agassiz where temperatures exceeded the optimum for most growth characteristics in many of the later plantings, the mean of maximum temperatures was negatively correlated with total dry-matter yield, peas per pod, and pea yield; was positively correlated with branching; and had no effect on pods per plant, double-podded nodes, and tillering. At Vancouver, where temperatures were suboptimum for the early plantings and approached optimum for the later plantings, the mean of maximum temperatures was positively correlated with total dry-matter yield, pods per plant, double-podded nodes, tillering, and pea yield but had no effect on peas per pod or branching. A seasonal mean maximum temperature of 68 to 70°F was considered to be optimum for peas.

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