Crop yield is the industry standard for calculating the amount of horticultural produce
harvested. As a result, producing sufficient quantities of quality biochemical ingredients
can help to solve food security and nutritional issues. To ensure an adequate food supply,
the use of organic substrate, as opposed to natural soils, is preferred by many growers
for greenhouse cultivation of crops such as peppers. The aim of the study was to
determine the effect of coconut coir substrate on the yield and biochemical constituents
of pepper varieties grown under greenhouse conditions. Two sweet peppers varieties
(Sondela and Ilanga) were grown in fertigated coconut coir (experiment) or loamy soil
(control) under greenhouse conditions for two consecutive growing seasons in 2021 and
2022. The number of pepper fruits, as well as their dried weight and selected biochemical
contents, were investigated. Quantification was done using the concentration of dry
matter and selected biochemical constituents from freeze-dried fruit samples. Results
illustrated that the treatment combination of coconut coir and variety (Ilanga) resulted in
a higher fruit number when compared to other treatments. Biochemical constituents such
as vitamins, total phenols, total flavonoids, copper, iron and zinc were superior in fruits
grown under coir substrate when compared to loamy soil (control). Therefore, farmers are
encouraged to grow sweet peppers varieties under coconut coir substrate for better yield,
nutritional quality and profit maximisation.
Opbrengste is die standaard waarvolgens die bedryf bepaal hoeveel tuinbouprodukte
geoes is. Die vervaardiging van voldoende hoeveelhede eersteklas biochemiese
bestanddele kan voedselveiligheid verseker en voedingstekorte aanvul. Die meeste
kwekers verkies ’n organiese substraat bo natuurlike grond om gewasse soos soetrissies
in kweekhuise te verbou omdat die gewasse sodoende genoegsame voeding ontvang.
Hierdie studie wou vasstel of ʼn klapperhaarsubstraat enige uitwerking het op die
opbrengs en biochemiese samestelling van soetrissievariëteite wat in ʼn kweekhuis
verbou word. Twee soetrissievariëteite (Sondela en Ilanga) is in twee opeenvolgende
seisoene (2021 en 2022) in ʼn kweekhuis in bemeste klapperhaar en ook in leemgrond
(die kontrole) geplant. Die aantal soetrissievrugte, hulle droë gewig asook ʼn keur van hul
biochemiese bestanddele is ontleed. Die kwantifisering is gedoen op grond van ʼn
konsentrasie droë materie en ʼn keur van die biochemiese bestanddele van
vriesgedroogde vrugtemonsters. Daar is bevind dat die kombinasie van klapperhaar en
variëteit (Ilanga) ʼn groter opbrengs as enige ander behandeling lewer. Die biochemiese
bestanddele van vrugte wat in ʼn klapperhaarsubstraat gekweek is, soos vitamiene, totale
fenol, totale flavonoïed, koper, yster en sink, was van ʼn hoër gehalte as dié van vrugte
wat in leemgrond (die kontrole) gekweek is. Boere word dus aangeraai om
soetrissievariëteite in ʼn klapperhaarsubstraat te kweek met die oog op ʼn hoër opbrengs,
groter voedingswaarde en ʼn maksimumwins.
Palo ya tšweletšo ya temo ya dibjalo tšeo di bunnwego ke maemo ao a šomišwago ke
intasteri go lekola ditšweletšwa tša temo tšeo di bunnwego. Ka lebaka leo, go tšweletša
palo ye e lekanego ya metswako ya boleng ya dikhemikhale tša phepo ya dibjalo go ka
thuša go rarolla mathata a tšhireletšo ya dijo le mathata a tša phepo. Tšhomišo ya
manyora a tlhago ka ntlong ya go godiša dibjalo tše bjalo ka dipherefere go netefatša
gore go na le kabo ya dijo ye e lekanego, ke mokgwa wo o šomišwago ke bontši bja
balemi bakeng sa mabu a tlhago. Maikemišetšo a nyakišišo ye e be e le go laetša khuetšo
ya morole wa khokhonate go puno le metswako ya dikhemikhale tša phepo ya dibjalo go
mehuta ya pherefere ye bjetšwego ka gare ga ntlo ya go godiša dibjalo. Mehuta e mebedi
ya pherefere e bose (Sondela le Ilanga) e bjetšwe ka gare ga morole wa khokhonate wo
o nontšhitšwego le go nošetšwa le mobu wa serota goba seloko (taolo) ka gare ga ntlo
ya go godiša ka dihla tše pedi tša go latelana [2021 le 2022]. Palo ya dienywa tša
pherefere, gammogo le boima bja tše di omilego le metswako ye e kgethilwego tša
dikhemikhale tša phepo ya dibjalo, di ile tša nyakišišwa. Tekanyo e dirilwe ka go šomiša
motswako wa dikarolo tša kgolo ya dibjalo tšeo di omilego le dikarolo tše di kgethilwego
tša dikhemikhale tša phepo ya dibjalo go tšwa go disampole tša dienywa tše di
omišitšwego le go kgahlišwa ka setšidifatši. Dipoelo tša nyakišišo di laeditše gore
mokgwa wa go tswaka morole wa khokhonate le mehuta e mengwe (Ilanga) go bile le
puno ye kgolo ya dienywa ge go bapetšwa le mekgwa e mengwe. Dikarolo tša
dikhemikhale tša phepo ya dibjalo bjalo ka dibithamini, palomoka ya diphenole, palomoka
ya difolavonoite, koporo, tšhipi le zinki di hweditšwe go dienywa tša go bjalwa ka fase ga
manyora ge e bapetšwa le dienywa tša go bjalwa mmung wa serota goba seloko (taolo).
Bjalo, balemi ba hlohleletšwa go bjala mehuta ya go fapana ya di pherefere tše di bose
ka fase ga morole wa khokhonate go tšweletša puno e kaone, boleng bja phepo le go
oketša letseno.
