scholarly journals Field Performance of Wildpeach (Prunus persica L.) as a Rootstock for Peach Compared with Lovell and Nemaguard

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 666d-666
Author(s):  
U.L. Yadava
Keyword(s):  
Prunus Persica ◽  
Cultural Practices ◽  
Block Design ◽  
Field Performance ◽  
Cold Injury ◽  
Peach Tree ◽  
Short Life ◽  
Tree Survival ◽  
Randomized Complete Block Design ◽  
Good Potential

A planting of 48 trees of `Redhaven' scion on Lovell, Nemaguard, and Wildpeach rootstocks (RS) was established in 1990, with four replications in randomized complete-block design. Cultural practices common in Georgia were used to maintain the planting. Orchard performance for peach tree short life (PTSL) related tree survival, RS suckering, fungal gummosis, and tree stresses from cold injury and Pseudomonas canker, was investigated to examine RS potential of Wildpeach compared with Lovell and Nemaguard. Trees on all RS showed 100% survival for the first 5 years in the orchard. Although canker became more prevalent in later years, trees had significantly higher ratings on Nemaguard (2.88) and Lovell (2.50) RS than on Wildpeach (1.44). However, PTSL stress enraged by Pseudomonas killed one tree each on Lovell and Wildpeach RS during 1995. Trunk cambial browning that estimated cold injury was trivial due to mild winters; however, trees on Nemaguard had higher TCB ratings (1.25) than on other RS. Trees on Wildpeach had fewer suckers than on Nemaguard or Lovell. Gummosis ratings were higher on Nemaguard RS than on Lovell and Wildpeach. The results showed that Wildpeach has good potential for a peach RS.

scholarly journals SHORT-LIFE AND NON-SHORT-LIFE SOIL RATIO AND ROOT TYPE AFFECT PEACH TREE SURVIVAL IN FIELD MICROPLOT

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 638g-638
Author(s):  
Umedi L. Yadava
Keyword(s):  
Tree Mortality ◽  
Prunus Persica ◽  
Cultural Practices ◽  
Peach Tree ◽  
Short Life ◽  
Top Soil ◽  
Tree Survival ◽  
Soil Effects ◽  
Soil Mix ◽  
Root Types

A planting of 90 Redhaven peach (Prunus persica (L) Batsch) trees either budded to Lovell and Nemaguard rootstocks or on their own roots, was established in spring 1984 using in-ground 55-gallon microplots. Planting soils (top soil, not B and C layers) prepared in five ratios by mixing soils from peach tree short life (PTSL) and non-PTSL (NPSL) sites (100% PTSL, 75% PTSL + 25% NPSL, 50% of each, 25% PTSL + 75% NPSL, and 100% NPSL) as main plots, were replicated 3 times. Two trees per rootstock were randomized within main plots. The planting was maintained using conventional cultural practices. Observations for tree survival were recorded in December each year. During this investigation, both soil mix and root types significantly affected tree survival, which was consistently the highest in 100% NPSL and the lowest in 100% PTSL soil. Effects of other soil combinations were intermediate; however, greater tree mortality was associated with increased ratio of PTSL soil. Trees on Lovell roots invariably survived the best followed by those on Nemaguard roots and the lowest when on their own roots. As early as in fourth leaf, >55% of the own-rooted trees died compared to < 10% on either rootstock.

scholarly journals Adjusting planting time of Binadhan-17 in boro season

2021 ◽  
pp. 21-27
Author(s):  
Shampa Rani Ghosh ◽  
Sushan Chowhan ◽  
Snigdha Roy ◽  
Dinesh Chandra Roy ◽  
Md. Khan Jahan Ali ◽  
...  
Keyword(s):  
Block Design ◽  
Field Trials ◽  
Morphological Data ◽  
Main Field ◽  
Short Life ◽  
Rice Varieties ◽  
Nitrogenous Fertilizer ◽  
Sowing Dates ◽  
Randomized Complete Block Design ◽  
Disease Free

Boro rice (grown in winter under irrigated condition) contributes to the major portion of rice production (over 50%) in Bangladesh. Binadhan-17 is a green super rice developed by BINA which requires 30% less nitrogenous fertilizer and water which is grown in aman season (primely produced under rainfed). Due to it’s increasing popularity and adoption rice growers are keen to cultivate it in boro season also. Taking account of the above situation, two field trials were conducted at Magura during November 2019 to May 2020 to investigate the effect of variety, sowing dates and their interaction. Factorial RCBD (Randomized Complete Block Design) was applied for experimentation. Two rice varieties: Binadhan-17 (V1), BRRI dhan58 (V2) and three sowing times: 30th November (T1), 10th December (T2), 20th December (T3) were used as treatments. 35 days old seedlings were transplanted in main field. Relevant agronomic and morphological data were statistically analyzed through Statistix 10.0. Combined effect of the above factors at farm exposed that, T1×V1 required longest days (159.33 days) to mature. but, comparatively short life cycle (149.97 days) was observed by T3×V2. Maximum grain was yielded (7.70 t/ha) by T2×V1 and minimum (5.74 t/ha) by T1×V1 treatment combination. Outcomes of on station revealed that, T1×V1 needed more days (158.00 days) to mature; conversely, alike duration was noted with T2×V2 (147.20 days) and T3×V2 (145.43 days) which matured quite earlier. T2×V1 produced the highest grain yield (7.41 t/ha) and T1×V2 the lowest (5.94 t/ha). Our results indicate that, planting of Binadhan-17 on 10th December may give insect-disease free grains with optimum yield in context of Magura region. Farmers will be financially benefited if they cultivate this variety in the boro season in lieu of aman; due to higher yield

scholarly journals Control of Imported Cabbageworm on Late Season Cabbage, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 67-67
Author(s):  
Donald J. Prostak
Keyword(s):  
Cultural Practices ◽  
Block Design ◽  
Hollow Cone ◽  
Late Season ◽  
Randomized Complete Block Design

Abstract Cabbage was transplanted on 9 Aug at the Snyder Research and Extension Farm, Pittstown, NJ. Treatment plots were replicated 4 times in a randomized complete block design and consisted of single rows, 30 ft long on 5 ft centers with 3 ft between plants. Buffers were 5 ft between rows and 12 ft between plots within rows. Standard cultural practices were used throughout the trial. Treatments were applied on 15, 18 Sep, and 1 Oct with a COz-pressurized single hollow-cone nozzle, hand-held sprayer that delivered 73.5 gal/acre directed at the upper surface of all leaves. Activator 90, a spreader-sticker, was added at the rate of 1 pt/100 gal to all treatments. Plots were evaluated on 28 Sep and 5 Oct by examining 5 plants from the middle of each replicate. All ICW larvae on the leaves were identified and counted.

scholarly journals Yield performance of the cocoa clones of Sca 6 and DRC 15 resistant to vascular-streak dieback

2009 ◽  
Vol 25 (2) ◽  
Author(s):  
Agung Wahyu Susilo ◽  
Surip Mawardi ◽  
Sudarsianto Sudarsianto
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Quality Standard ◽  
Fat Content ◽  
Yield Potential ◽  
Yield Performance ◽  
Stability Performance ◽  
Randomized Complete Block Design ◽  
Good Potential ◽  
Theobroma Cacao L

Selection on cocoa resistance to vascular-streak dieback (VSD) has identified some resistant clones for breeding purposes. Of the resistant clones, it was selected Sca 6 and DRC 15 which performing good potential for yield. This paper reports results on testing yield potential of the clones in separate trials. Sca 6 was tested in Kottablater Estate (dry climate in the altitude of ± 25 m asl.) and DRC 15 was tested in Mumbulsari Estate (dry climate in the altitude of ± 45 m asl.) both are in Jember. Trials were arranged in the randomized complete block design with 4 blocks. Evaluation for yield performance was conducted during 6 years of harvest and stability performance was analyzed in regression term using year of harvest as the index. The results indicate the yield potential of the clones was quite similar in the level of 1.4 kg/plant and performing stability during evaluation and good adaptability in the location. The yield potential was lower than the high yielding clones but use of Sca 6 and DRC 15 in heavily infasted VSD area should be considered than using of the susceptible clones. Sca 6 performed low potential on a dry-weight bean in the range of 0.65—0.86 g (class C of quality standard) but better performance could be found in the wet area. DRC 15 performed good potential on a dryweight bean of 1.16 g (class AA of quality standard). Fat content analysis of Sca 6 indicate a better performance of beans which grown up in the wet area (58.2%) than in the dry area (49.6%). It was reported the fat content potential of DRC 15 in the level of 50.4%. Key words: Yield performance, vascular-streak dieback, resistant clone, Theobroma cacao L.

scholarly journals DUS Characterisation of Advanced Recombinant Lines of Kalanamak Rice (Oryza sativa L.) Using Morphological Descriptors and Quality Parameters

2019 ◽  
pp. 1-8
Author(s):  
Banshidhar . ◽  
Priyanka Jaiswal ◽  
Mithilesh Kumar Singh ◽  
Indra Deo
Keyword(s):  
Cultural Practices ◽  
Amylose Content ◽  
Oryza Sativa L ◽  
Block Design ◽  
Quality Parameters ◽  
Research Centre ◽  
Early Maturity ◽  
Randomized Complete Block Design ◽  
New Varieties ◽  
Crop Research

The present investigation was undertaken with the objective of DUS characterisation of advanced recombinant lines of Kalanamak rice for 47 visually assessed characters and 15 quantitative characters. Trials were conducted for two seasons during Kharif 2016 and 2017 at Norman E. Borlaug Crop Research Centre (NEBCRC), G. B. Pant University of Agriculture and Technology (GBPUAT), Pantnagar, Uttarakhand in a Randomized Complete Block Design (RCBD) in three replications with the spacing of 20 cm × 15 cm and the recommended cultural practices were followed. For this data were recorded for sixty-two DUS descriptors following the guidelines of the International Union for the Protection of New Varieties of Plants (UPOV) and the Protection of Plant Varieties and Farmer’s Rights Authority (PPV & FRA). In the present study, 27 visually assessed characteristics are found to be monomorphic, 18 are dimorphic and 2 are polymorphic. KARL10 with higher yield, intermediate amylose content, early 50% flowering and early maturity is reported to be best genotypes in respect of desired characteristics and could be used as a potential source for deriving improved lines through selection.

scholarly journals Control of cacao (Theobroma cacao) diseases in Santo Domingo de los Tsachilas, Ecuador

2021 ◽  
pp. 45939
Author(s):  
Vicente Anzules-Toala ◽  
Elvis Pazmiño-Bonilla ◽  
Leonel Alvarado-Huamán ◽  
Ricardo Borjas-Ventura ◽  
Viviana Castro-Cepero ◽  
...  
Keyword(s):  
Theobroma Cacao ◽  
Cultural Practices ◽  
Block Design ◽  
Brown Rot ◽  
Net Income ◽  
Santo Domingo ◽  
Phytophthora Spp ◽  
Randomized Complete Block Design ◽  
Black Pod ◽  
Cocoa Plantation

Introduction. Ecuador occupies the fourth place in cocoa exports with 293,487 tons per year, produced on 559,617 hectares. However, its yield per hectare is low mainly due to the presence of pathogens that affect the pods. Objective. To evaluates different methods of control of pathogens of the Theobroma cacao cv ‘CCN-51’ pod. Materials and methods. The work was carried out in Luz de America, Santo Domingo de los Tsachilas, Ecuador, between 2016 and 2017. The treatments were the result of the combination of cultural practices + two fungicides (Chlorothalonil and Pyraclostrobin) + one biofungicide Serenade® (Bacillus subtilis QST713), with and without fertilizers. In total, 16 treatments were evaluated with 3 replicates or blocks, installed in a commercial cocoa plantation cv ‘CCN-51’ and under a Randomized Complete Block Design (RCBD). Results. The use of fungicides (chemical and biological), decreased the incidence of moniliasis (Moniliophthora roreri), black pod rot (Phytophthora spp.), and cherelle wilt; but the application of fertilizers did not increase the effectiveness of these products. Treatment with only cultural practices did not decrease the final incidence of moniliasis, nor of brown rot, in contrast, the final incidence of cherelle wilt increased. The number of pods and the yield were not directly related and the highest yield of fermented and dry cocoa, corresponded to T9 [Cultural labors + Serenade® (0.2 kg ha-1) (every 15 days) + Fertilizer (0.3 kg ha-1) + Fertilizer (1 kg plant-1)], a treatment that also had the highest net income per hectare. Conclusion. Chemical and biological control can manage cocoa pods pathogens. The integration of both control methods allowed the cocoa producer to obtain greater income.

scholarly journals Relative Susceptibility of Peach and Plum Germplasm to Armillaria Root Rot

HortScience ◽  
1998 ◽  
Vol 33 (6) ◽  
pp. 1062-1065 ◽  
Author(s):  
T.G. Beckman ◽  
W.R. Okie ◽  
A.P. Nyczepir ◽  
P.L. Pusey ◽  
C.C. Reilly
Keyword(s):  
Root Rot ◽  
Prunus Persica ◽  
Peach Tree ◽  
Short Life ◽  
Native North American ◽  
Potential Source ◽  
Armillaria Root Rot ◽  
Wide Range ◽  
History Of ◽  
A Site

Nearly 5000 seedling trees representing more than 100 peach [Prunus persica (L.) Batsch.] and plum (Prunus spp.) lines were planted at a 4 × 0.6-m spacing in Jan. 1983, on a site with a known history of peach tree short life (PTSL) and Armillaria root rot (ARR). Trees were arranged in a randomized complete-block with eight replicates of six trees each. Beginning in Spring 1984 and each year thereafter the cause of tree death was determined. At the end of 9 years, 50% of the trees had succumbed to PTSL and 35% had been killed by ARR apparently caused by Armillaria tabescens. Analysis of the data for trees killed by ARR showed a wide range in mortality, some peach lines appeared significantly more tolerant to ARR than others. Plum lines derived from native North American species also appeared to be a potential source of improved tolerance. We did not establish whether ARR tolerance is affected by PTSL.

scholarly journals Evaluation of Turmeric (Curcuma longa L) Genotypes for Growth and Yield Attributes in Plains of Eastern Nepal

2021 ◽  
pp. 57-64
Author(s):  
Tika Ram Chapagain ◽  
Amit Prasad Timilsina ◽  
Sabita Sharma ◽  
Kumar Mani Dahal ◽  
Samid Ahamad
Keyword(s):  
Significant Positive Correlation ◽  
Cultural Practices ◽  
Agricultural Research ◽  
Curcuma Longa ◽  
Block Design ◽  
Pooled Analysis ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Randomized Complete Block Design ◽  
Plot Area

An experiment was conducted in order to identify the productive genotype of turmeric for the plains of Nepal. In 2017 and 2018, seven promising turmeric genotypes (CI 0207, CI 0205, CI 9102, CI 1312, CI 0503, CI 0507, and CI 0201) were compared with KKH-1 in a Randomized Complete Block Design with four replications at the Directorate of Agricultural Research, Tarahara, Nepal. The plants were 30 cm x 30 cm apart, with 40 plants per 3.6 m2 plot area. Cultural practices were followed in accordance with the recommendations. Analysis of variance, correlation, cluster, and GGEbiplot analysis were performed on the observed data. From the pooled analysis of two years of data, the results showed significant differences in plant height and fresh rhizome yield among genotypes. The rhizome yield of KKH-1 was found significantly higher (19.36 t ha-1) than CI 0205 and CI 9102 and at par with other genotypes. Weight of mother rhizome had significant positive correlation (r = 0.602**) with yield of fresh rhizome. Though KKH-1 yielded the highest fresh rhizome, the cluster and GGEbiplot analysis identified CI0207 as one of the potential turmeric clones next to KKH-1.

scholarly journals USE OF CLONALLY REPLICATED SEEDLINGS IN FIELD SCREENING FOR RESISTANCE TO PEACH TREE SHORT LIFE

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 657g-658
Author(s):  
W.R. Okie ◽  
T. G. Beckman ◽  
A.P. Nyczepir
Keyword(s):  
Genetic Variation ◽  
Prunus Persica ◽  
High Density ◽  
The Other ◽  
Peach Tree ◽  
Short Life ◽  
Genetic Studies ◽  
Field Screening ◽  
Screening For Resistance ◽  
Selection Of

Lovell rootstock is recommended for Peach Tree Short Life (PTSL) sites in the Southeast because it outlives Nemaguard. No genetic studies of PTSL tolerance have been done. Clonally replicated peach seedlings [Prunus persica (L.) Batsch] of Lovell, Nemaguard and four F1 selections of Lovell × Nemared were tested for field survival in a high density planting on a PTSL site. Rootstock families (12 seedlings × 8 ramets each) differed in growth, survival and longevity. Genetic variation was comparable to environmental variation for most families. Based on seedling within rootstock family, estimated broad-sense heritabilities for survival and longevity were high. The use of clonally replicated seedlings allowed the selection of apparently superior individuals from both Lovell and the other more short-lived rootstock families in a single screening after 6 years. Survival of Lovell at that time was 50% compared to 16-29% for other families. Across all families, all 8 ramets were dead for 21 seedlings, whereas all 8 were alive for only 3 seedlings.

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